It seems that for every valid WU, I get an error for the next.

Host ID: 24564

AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ [x86 Family 15 Model 107 Stepping 2] 3MB RAM
Win Vista 32 Home Basic x86 Service Pack 1, (06.00.6001.00)
Boinc 6.4.7
GeForce 9800 GT 512MB
Nvidia 182.08

I can also only run 1 Boinc task when running a GPUgrid task.

Any suggestions?

I can also only run 1 Boinc task when running a GPUgrid task.

Any suggestions?

Try Boinc 6.5.0. Download the version for your OS from here.

Phoneman1

I don't suppose it's the BOINC, but worth a try anyway.

Which driver do you use?

And a shot into the wild: could it be that you switch your PC off over night and the 1st WU of each day has a pretty good chance for success, while the second one is likely to fail? Maybe some serious heat build-up?

MrS

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Scanning for our furry friends since Jan 2002

Machine is on 24/7. Driver is Nvidia 182.08.

It is a relative new machine. I will add another fan to it to see if that helps.

Or leave the side panel off, testwise.

MrS

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Scanning for our furry friends since Jan 2002

Are you running any temperature (etc) utils?

If not download these two before you buy anything - there are legions of them, these two will do for now until you settle on ones you like:

Core cpu temperature: http://www.alcpu.com/CoreTemp/
Core GPU Temperature (amongst lots of other facts): http://www.techpowerup.com/downloads/1333/TechPowerUp_GPU-Z_v0.3.2.html

Run them whenever you want to do a check of the cpu/gpu temperature, then compare against the cpu/card gpu specs on board/cpu suppliers Site. If close to/over the spec temp, then another fan/replacement fan - might - be in order.

If it shows over the spec maximum temperature - stop processing WUs immediately until we can deduce whats going on, that will reduce the core temperatures back to safe levels for the moment.

Regards
Zy