Results not coming through from one machine

I run a mixed SunOS/Linux crunching setup. I noticed when I start crunching away it takes a while for my computers to be "acknowledged" on the stats page. However I have a 4CPU SunOS maching apparently working away happily (at least now it's got some WU's downloaded) but its now been several days that it has averaged and totalled 0.0 credit, even though I've seen successful downloads and uploads. I have checked that my corrrect username etc is specified (it is). Any clues? My stats seem to jump wildly anyway, I only seem to see any increment when about 500 credits are queued up.

Oh and if anyone knows why my seti classic score is 5000 WU's lower than it actually is on my account I would love to know :(

Never mind - 24 hours later its first results are announced. I'm assuming they've just been held up in the validation process.. Took a while though - it appears to have crunched *a lot* of WU's but only a measly amount of credit trickled in..

Dan