I have been running BOINC for almost two years. Currently using Boinc mgr 4.43. Lately I have been getting computation errors on WUs on a regular basis. Here is a sample message stream for one of them. Any ideas what is going on? Thanks!

5/25/2006 6:19:01 AM|climateprediction.net|Pausing result hadcm3lbm_490k_05154449_0 (left in memory)
5/25/2006 6:19:01 AM|SETI@home|Starting result 07ja99aa.23932.20418.581268.3.70_0 using setiathome_enhanced version 5.15
5/25/2006 7:19:01 AM||schedule_cpus: time 3600.104332
5/25/2006 7:19:01 AM|climateprediction.net|Resuming result hadcm3lbm_490k_05154449_0 using hadcm3lb version 5.08
5/25/2006 7:19:01 AM|SETI@home|Pausing result 07ja99aa.23932.20418.581268.3.70_0 (left in memory)
5/25/2006 8:19:01 AM||schedule_cpus: time 3600.026213
5/25/2006 9:19:01 AM||schedule_cpus: time 3600.030619
5/25/2006 9:36:45 AM||request_reschedule_cpus: process exited
5/25/2006 9:36:45 AM|SETI@home|Computation for result 22fe99aa.5487.27520.1034646.3.161_0 finished
5/25/2006 9:36:45 AM||schedule_cpus: must schedule
5/25/2006 9:36:45 AM|climateprediction.net|Pausing result hadcm3lbm_490k_05154449_0 (left in memory)
5/25/2006 9:36:45 AM|SETI@home|Resuming result 07ja99aa.23932.20418.581268.3.70_0 using setiathome_enhanced version 5.15
5/25/2006 9:36:45 AM|SETI@home|Starting result 07ja99aa.23932.20418.581268.3.78_2 using setiathome_enhanced version 5.15
5/25/2006 9:36:46 AM|SETI@home|Started upload of 22fe99aa.5487.27520.1034646.3.161_0_0
5/25/2006 9:36:48 AM|SETI@home|Finished upload of 22fe99aa.5487.27520.1034646.3.161_0_0
5/25/2006 9:36:48 AM|SETI@home|Throughput 92482 bytes/sec
5/25/2006 10:36:45 AM||schedule_cpus: time 3600.002380
5/25/2006 10:36:45 AM|climateprediction.net|Resuming result hadcm3lbm_490k_05154449_0 using hadcm3lb version 5.08
5/25/2006 10:36:45 AM|SETI@home|Pausing result 07ja99aa.23932.20418.581268.3.78_2 (left in memory)
5/25/2006 11:36:45 AM||schedule_cpus: time 3600.080502
5/25/2006 11:43:10 AM|SETI@home|Unrecoverable error for result 07ja99aa.23932.20418.581268.3.70_0 ( - exit code -1073741819 (0xc0000005))
5/25/2006 11:43:10 AM||request_reschedule_cpus: process exited
5/25/2006 11:43:10 AM|SETI@home|Deferring communication with project for 1 minutes and 0 seconds
5/25/2006 11:43:10 AM|SETI@home|Computation for result 07ja99aa.23932.20418.581268.3.70_0 finished
5/25/2006 11:43:10 AM||schedule_cpus: must schedule

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According to the Boinc Wiki, the Unrecoverable error for result xxxxx( - exit code -1073741819 (0xc0000005)) message is related to the following:

Common causes of these errors can be:
Over stressed hardware, usually by heat.
Flaky, or bad device drivers.
An actual problem (Bug) in the BOINC Client Software, Science Application, or Operating System.
A bad Work Unit (usually a rare occurrence).

You could check various hardware related issues like:
1. Is your system stable? (see How-To Test Machine Stability)
2. Is your CPU cooling up to the job?
3. Is there adequate ventilation inside your case?
4. Have you checked all fans and cleaned the inside to remove dust buildup? (see How-To Do Basic Hardware Maintenance)
5. Is the ambient temperature of the room too high?
6. Can you setup a motherboard monitoring program to look at temperature fluctuations?
7. Can you swap memory sticks and see if the problem goes away?
8. Are you "overclocking" at all?

Try running with BOINC 5.4.9, it has lots of bug fixes plus it actually is compliant with Seti Enhanced's way of calculating based on FLOPS.

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