I've also got this problem with a set of computers in my team. For a while, I blamed it on the web filter (DansGuardian), but everything BOINC was on the white list. One computer has a quota of 2, and I haven't checked the others. We recently installed 5.10.13 (xp). We had a completely seperate problem before upgrading: BOINC wouldn't connect to the internet. Here's the messages for one of the computers.
10/4/2007 12:38:55 PM||Starting BOINC client version 5.10.13 for windows_intelx86
10/4/2007 12:38:55 PM||log flags: task, file_xfer, sched_ops
10/4/2007 12:38:55 PM||Libraries: libcurl/7.16.1 OpenSSL/0.9.8e zlib/1.2.3
10/4/2007 12:38:55 PM||Data directory: C:\\Program Files\\BOINC
10/4/2007 12:38:55 PM||Processor: 2 GenuineIntel Intel(R) Pentium(R) D CPU 2.80GHz [x86 Family 15 Model 4 Stepping 7]
10/4/2007 12:38:55 PM||Processor features: fpu tsc sse sse2 mmx
10/4/2007 12:38:55 PM||Memory: 502.07 MB physical, 1.20 GB virtual
10/4/2007 12:38:55 PM||Disk: 74.45 GB total, 66.74 GB free
10/4/2007 12:38:55 PM||Version change (5.10.20 -> 5.10.13) - I know, a downgrade. This particular group of computers has a problem with 5.10.20.
10/4/2007 12:38:55 PM|SETI@home|URL: http://setiathome.berkeley.edu/; Computer ID: 2812630; location: school; project prefs: default
10/4/2007 12:38:55 PM||General prefs: from SETI@home (last modified 2007-06-18 07:46:48)
10/4/2007 12:38:55 PM||Host location: school
10/4/2007 12:38:55 PM||General prefs: using separate prefs for school
10/4/2007 12:38:55 PM||Reading preferences override file
10/4/2007 12:38:55 PM||Preferences limit memory usage when active to 251.03MB
10/4/2007 12:38:55 PM||Preferences limit memory usage when idle to 451.86MB
10/4/2007 12:38:55 PM||Preferences limit disk usage to 18.63GB
10/4/2007 12:38:55 PM||Running CPU benchmarks
10/4/2007 12:39:26 PM||Benchmark results:
10/4/2007 12:39:26 PM|| Number of CPUs: 2
10/4/2007 12:39:26 PM|| 1431 floating point MIPS (Whetstone) per CPU
10/4/2007 12:39:26 PM|| 2280 integer MIPS (Dhrystone) per CPU
10/4/2007 12:40:05 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:40:05 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:41:40 PM|SETI@home|Scheduler request failed: HTTP bad gateway
10/4/2007 12:41:40 PM|SETI@home|Deferring communication for 1 min 0 sec
10/4/2007 12:41:40 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:42:40 PM|SETI@home|Fetching scheduler list
10/4/2007 12:42:45 PM|SETI@home|Master file download succeeded
10/4/2007 12:42:50 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:42:50 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:42:55 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:42:55 PM|SETI@home|Deferring communication for 1 min 0 sec
10/4/2007 12:42:55 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:43:15 PM||General prefs: from SETI@home (last modified 2007-06-18 07:46:48)
10/4/2007 12:43:15 PM||Host location: school
10/4/2007 12:43:15 PM||General prefs: using separate prefs for school
10/4/2007 12:43:15 PM||Reading preferences override file
10/4/2007 12:43:15 PM||Preferences limit memory usage when active to 251.03MB
10/4/2007 12:43:15 PM||Preferences limit memory usage when idle to 451.86MB
10/4/2007 12:43:15 PM||Preferences limit disk usage to 19.56GB
10/4/2007 12:43:55 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:43:55 PM|SETI@home|(not requesting new work or reporting completed tasks)
10/4/2007 12:44:00 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:44:00 PM|SETI@home|Deferring communication for 1 min 0 sec
10/4/2007 12:44:00 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:45:00 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:45:00 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:45:05 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:45:05 PM|SETI@home|Deferring communication for 1 min 0 sec
10/4/2007 12:45:05 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:46:05 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:46:05 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:46:10 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:46:10 PM|SETI@home|Deferring communication for 1 min 0 sec
10/4/2007 12:46:10 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:47:10 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:47:10 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:47:15 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:47:15 PM|SETI@home|Deferring communication for 1 min 59 sec
10/4/2007 12:47:15 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:47:50 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:47:50 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:47:55 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:47:55 PM|SETI@home|Deferring communication for 5 min 59 sec
10/4/2007 12:47:55 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:53:55 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:53:55 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:54:20 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:54:20 PM|SETI@home|Deferring communication for 8 min 54 sec
10/4/2007 12:54:20 PM|SETI@home|Reason: scheduler request failed
10/4/2007 12:55:59 PM|SETI@home|Resetting project
10/4/2007 12:56:06 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 12:56:06 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 12:56:11 PM|SETI@home|Scheduler request failed: HTTP service unavailable
10/4/2007 12:56:11 PM|SETI@home|Deferring communication for 29 min 3 sec
10/4/2007 12:56:11 PM|SETI@home|Reason: scheduler request failed
10/4/2007 1:25:16 PM|SETI@home|Sending scheduler request: Requested by user
10/4/2007 1:25:16 PM|SETI@home|Requesting 864002 seconds of new work
10/4/2007 1:25:21 PM|SETI@home|Scheduler RPC succeeded [server version 511]
10/4/2007 1:25:21 PM|SETI@home|Message from server: No work sent
10/4/2007 1:25:21 PM|SETI@home|Message from server: (reached daily quota of 2 results)
10/4/2007 1:25:21 PM|SETI@home|Deferring communication for 12 hr 55 min 17 sec
10/4/2007 1:25:21 PM|SETI@home|Reason: requested by project
10/4/2007 1:25:23 PM|SETI@home|[file_xfer] Started download of file arecibo_181.png
10/4/2007 1:25:23 PM|SETI@home|[file_xfer] Started download of file sah_40.png
10/4/2007 1:25:24 PM|SETI@home|[file_xfer] Finished download of file sah_40.png
10/4/2007 1:25:24 PM|SETI@home|[file_xfer] Throughput 7731 bytes/sec
10/4/2007 1:25:24 PM|SETI@home|[file_xfer] Started download of file sah_banner_290.png
10/4/2007 1:25:25 PM|SETI@home|[file_xfer] Finished download of file arecibo_181.png
10/4/2007 1:25:25 PM|SETI@home|[file_xfer] Throughput 71905 bytes/sec
10/4/2007 1:25:25 PM|SETI@home|[file_xfer] Finished download of file sah_banner_290.png
10/4/2007 1:25:25 PM|SETI@home|[file_xfer] Throughput 74093 bytes/sec
10/4/2007 1:25:25 PM|SETI@home|[file_xfer] Started download of file sah_ss_290.png
10/4/2007 1:25:26 PM|SETI@home|[file_xfer] Finished download of file sah_ss_290.png
10/4/2007 1:25:26 PM|SETI@home|[file_xfer] Throughput 119188 bytes/sec
10/5/2007 2:20:41 AM|SETI@home|Sending scheduler request: To fetch work
10/5/2007 2:20:41 AM|SETI@home|Requesting 864002 seconds of new work
10/5/2007 2:20:46 AM|SETI@home|Scheduler RPC succeeded [server version 511]
10/5/2007 2:20:46 AM|SETI@home|Deferring communication for 11 sec
10/5/2007 2:20:46 AM|SETI@home|Reason: requested by project
10/5/2007 2:20:48 AM|SETI@home|[file_xfer] Started download of file setiathome_5.27_windows_intelx86.exe
10/5/2007 2:20:48 AM|SETI@home|[file_xfer] Started download of file libfftw3f-3-1-1a_upx.dll
10/5/2007 2:20:49 AM|SETI@home|[file_xfer] Finished download of file libfftw3f-3-1-1a_upx.dll
10/5/2007 2:20:49 AM|SETI@home|[file_xfer] Throughput 11070 bytes/sec
10/5/2007 2:20:49 AM|SETI@home|[file_xfer] Started download of file setiathome-5.27_COPYING
10/5/2007 2:20:49 AM|SETI@home|[error] Checksum or signature error for libfftw3f-3-1-1a_upx.dll - Blocked extension .dll on web filter.
10/5/2007 2:20:50 AM|SETI@home|Deferring communication for 1 min 0 sec
10/5/2007 2:20:50 AM|SETI@home|Reason: Unrecoverable error for result 09mr07ad.15986.29536.6.6.213_0 (app_version download error: couldn't get input files:<file_xfer_error> <file_name>libfftw3f-3-1-1a_upx.dll</file_name> <error_code>-200</error_code></file_xfer_error>)
10/5/2007 2:20:50 AM|SETI@home|[file_xfer] Finished download of file setiathome-5.27_COPYING
10/5/2007 2:20:50 AM|SETI@home|[file_xfer] Throughput 49977 bytes/sec
10/5/2007 2:20:50 AM|SETI@home|[file_xfer] Started download of file setiathome-5.27_COPYRIGHT
10/5/2007 2:20:51 AM|SETI@home|[file_xfer] Finished download of file setiathome-5.27_COPYRIGHT
10/5/2007 2:20:51 AM|SETI@home|[file_xfer] Throughput 64193 bytes/sec
10/5/2007 2:20:51 AM|SETI@home|[file_xfer] Started download of file setiathome-5.27_README
10/5/2007 2:20:52 AM|SETI@home|[file_xfer] Finished download of file setiathome-5.27_README
10/5/2007 2:20:52 AM|SETI@home|[file_xfer] Throughput 42978 bytes/sec
10/5/2007 2:20:52 AM|SETI@home|[file_xfer] Started download of file seti_527.jpg
10/5/2007 2:20:53 AM|SETI@home|[file_xfer] Finished download of file seti_527.jpg
10/5/2007 2:20:53 AM|SETI@home|[file_xfer] Throughput 9068 bytes/sec
10/5/2007 2:20:53 AM|SETI@home|[file_xfer] Started download of file setiathome-5.27_AUTHORS
10/5/2007 2:20:55 AM|SETI@home|[file_xfer] Finished download of file setiathome-5.27_AUTHORS
10/5/2007 2:20:55 AM|SETI@home|[file_xfer] Throughput 751 bytes/sec
10/5/2007 2:20:55 AM|SETI@home|[file_xfer] Started download of file 09mr07ad.15986.29536.6.6.213
10/5/2007 2:21:52 AM|SETI@home|Sending scheduler request: To report completed tasks
10/5/2007 2:21:52 AM|SETI@home|Requesting 864002 seconds of new work, and reporting 2 completed tasks
10/5/2007 2:21:57 AM|SETI@home|Scheduler RPC succeeded [server version 511]
10/5/2007 2:21:57 AM|SETI@home|Message from server: No work sent
10/5/2007 2:21:57 AM|SETI@home|Message from server: (reached daily quota of 2 results)
10/5/2007 2:21:57 AM|SETI@home|Deferring communication for 1 days 0 hr 6 min 3 sec
10/5/2007 2:21:57 AM|SETI@home|Reason: requested by project
10/5/2007 2:22:50 AM||Project communication failed: attempting access to reference site
10/5/2007 2:22:50 AM|SETI@home|[file_xfer] Temporarily failed download of setiathome_5.27_windows_intelx86.exe: http error
10/5/2007 2:22:50 AM|SETI@home|Backing off 1 min 0 sec on download of file setiathome_5.27_windows_intelx86.exe
10/5/2007 2:22:50 AM|SETI@home|[file_xfer] Started download of file 09mr07ad.19178.32399.5.6.0
10/5/2007 2:22:51 AM||Access to reference site succeeded - project servers may be temporarily down.
10/5/2007 2:22:55 AM||Project communication failed: attempting access to reference site
10/5/2007 2:22:55 AM|SETI@home|[file_xfer] Temporarily failed download of 09mr07ad.15986.29536.6.6.213: http error
10/5/2007 2:22:55 AM|SETI@home|Backing off 1 min 0 sec on download of file 09mr07ad.15986.29536.6.6.213
10/5/2007 2:22:56 AM||Access to reference site succeeded - project servers may be temporarily down.
10/5/2007 2:23:50 AM|SETI@home|[file_xfer] Started download of file setiathome_5.27_windows_intelx86.exe
10/5/2007 2:23:51 AM|SETI@home|[file_xfer] Finished download of file setiathome_5.27_windows_intelx86.exe
10/5/2007 2:23:51 AM|SETI@home|[file_xfer] Throughput 23029 bytes/sec
10/5/2007 2:23:51 AM|SETI@home|[error] Checksum or signature error for setiathome_5.27_windows_intelx86.exe - Blocked extension .exe
10/5/2007 2:23:55 AM|SETI@home|[file_xfer] Started download of file 09mr07ad.15986.29536.6.6.213
10/5/2007 2:24:04 AM|SETI@home|[file_xfer] Finished download of file 09mr07ad.15986.29536.6.6.213
10/5/2007 2:24:04 AM|SETI@home|[file_xfer] Throughput 45145 bytes/sec
10/5/2007 2:24:50 AM||Project communication failed: attempting access to reference site
10/5/2007 2:24:50 AM|SETI@home|[file_xfer] Temporarily failed download of 09mr07ad.19178.32399.5.6.0: http error
10/5/2007 2:24:50 AM|SETI@home|Backing off 1 min 0 sec on download of file 09mr07ad.19178.32399.5.6.0
10/5/2007 2:25:50 AM|SETI@home|[file_xfer] Started download of file 09mr07ad.19178.32399.5.6.0
10/5/2007 2:25:59 AM|SETI@home|[file_xfer] Finished download of file 09mr07ad.19178.32399.5.6.0
10/5/2007 2:25:59 AM|SETI@home|[file_xfer] Throughput 50253 bytes/sec
10/5/2007 2:26:51 AM||Access to reference site failed - check network connection or proxy configuration.
10/5/2007 8:27:33 AM|SETI@home|Sending scheduler request: Requested by user
10/5/2007 8:27:33 AM|SETI@home|Requesting 864002 seconds of new work
10/5/2007 8:27:53 AM|SETI@home|Scheduler RPC succeeded [server version 511]
10/5/2007 8:27:53 AM|SETI@home|Message from server: No work sent
10/5/2007 8:27:53 AM|SETI@home|Message from server: (reached daily quota of 2 results)
10/5/2007 8:27:53 AM|SETI@home|Deferring communication for 17 hr 56 min 18 sec
10/5/2007 8:27:53 AM|SETI@home|Reason: requested by project
10/5/2007 11:55:18 AM|SETI@home|Sending scheduler request: To fetch work
10/5/2007 11:55:18 AM|SETI@home|Requesting 864002 seconds of new work
10/5/2007 11:55:23 AM|SETI@home|Scheduler RPC succeeded [server version 511]
10/5/2007 11:55:23 AM|SETI@home|Message from server: No work sent
10/5/2007 11:55:23 AM|SETI@home|Message from server: (reached daily quota of 2 results)
10/5/2007 11:55:23 AM|SETI@home|Deferring communication for 14 hr 7 min 53 sec
10/5/2007 11:55:23 AM|SETI@home|Reason: requested by project
10/5/2007 11:55:45 AM|SETI@home|Resetting project
10/5/2007 11:55:58 AM|SETI@home|Sending scheduler request: To fetch work
10/5/2007 11:55:58 AM|SETI@home|Requesting 864002 seconds of new work
10/5/2007 11:56:08 AM|SETI@home|Scheduler RPC succeeded [server version 511]
10/5/2007 11:56:08 AM|SETI@home|Message from server: No work sent
10/5/2007 11:56:08 AM|SETI@home|Message from server: (reached daily quota of 2 results)
10/5/2007 11:56:08 AM|SETI@home|Deferring communication for 15 hr 0 min 42 sec
10/5/2007 11:56:08 AM|SETI@home|Reason: requested by project
10/5/2007 11:56:10 AM|SETI@home|[file_xfer] Started download of file arecibo_181.png
10/5/2007 11:56:10 AM|SETI@home|[file_xfer] Started download of file sah_40.png
10/5/2007 11:56:11 AM|SETI@home|[file_xfer] Finished download of file arecibo_181.png
10/5/2007 11:56:11 AM|SETI@home|[file_xfer] Throughput 879650 bytes/sec
10/5/2007 11:56:11 AM|SETI@home|[file_xfer] Finished download of file sah_40.png
10/5/2007 11:56:11 AM|SETI@home|[file_xfer] Throughput 46962 bytes/sec
10/5/2007 11:56:11 AM|SETI@home|[file_xfer] Started download of file sah_banner_290.png
10/5/2007 11:56:11 AM|SETI@home|[file_xfer] Started download of file sah_ss_290.png
10/5/2007 11:56:12 AM|SETI@home|[file_xfer] Finished download of file sah_banner_290.png
10/5/2007 11:56:12 AM|SETI@home|[file_xfer] Throughput 878896 bytes/sec
10/5/2007 11:56:12 AM|SETI@home|[file_xfer] Finished download of file sah_ss_290.png
10/5/2007 11:56:12 AM|SETI@home|[file_xfer] Throughput 1179966 bytes/sec
10/5/2007 11:56:43 AM|SETI@home|Sending scheduler request: To fetch work
10/5/2007 11:56:43 AM|SETI@home|Requesting 864002 seconds of new work
10/5/2007 11:56:48 AM|SETI@home|Scheduler RPC succeeded [server version 511]
10/5/2007 11:56:48 AM|SETI@home|Message from server: No work sent
10/5/2007 11:56:48 AM|SETI@home|Message from server: (reached daily quota of 2 results)
10/5/2007 11:56:48 AM|SETI@home|Deferring communication for 14 hr 22 min 15 sec
10/5/2007 11:56:48 AM|SETI@home|Reason: requested by project
As you can see, there was an internet problem on our end close to the beginning.
Thanks in advance.