I'm tearing my hair out after hours and hours in front of the PC trying to troubleshoot this problem. Basically, it all began with some corrupt jpegs...
I was working with a bunch of photos on a machine running Vista. I moved these across the LAN to a machine running XP Pro, SP2. Next day, I noticed that some of the appeared corrupt and failed to open. Many of these were also missing their embedded previews.
So far... and this is early days really... I think I've ruled out an HD problem and I think I've ruled out a virus/trojan. I retained copies of the jpegs on the Vista PC and they remain unaffected. Also, only newly-copied jpegs on the XP machine appear to be affected. No older files have this problem, although I've found it replicated in a few recent ones (I should add that I just rebuilt both these systems and the problem has only arisen since that point).
One thing I noticed... and I don't know if I'm barking up the right tree here... is that processor use seems very high on the XP machine. It idles along fine, but then leaps up to extremes as soon as fairly simple tasks are executed. Even browsing can cause 100% usage.
Now what pointed me to this is another weird problem. While trying to replicate the jpeg corruption, I moved a bunch of photo folders to the XP machine and received an error stating "insufficient resources" available to complete the request. No further files could be copied, I could still browse shared resources, but I couldn't remote desktop to the XP machine.
So... I'm wondering if low system resources could have corrupted the jpegs during the copying process? Which brings me to the next question.... why is processor usage so high? I'm really scratching my head on this one, so please shed any light you can.

I was working with a bunch of photos on a machine running Vista. I moved these across the LAN to a machine running XP Pro, SP2. Next day, I noticed that some of the appeared corrupt and failed to open. Many of these were also missing their embedded previews.
So far... and this is early days really... I think I've ruled out an HD problem and I think I've ruled out a virus/trojan. I retained copies of the jpegs on the Vista PC and they remain unaffected. Also, only newly-copied jpegs on the XP machine appear to be affected. No older files have this problem, although I've found it replicated in a few recent ones (I should add that I just rebuilt both these systems and the problem has only arisen since that point).
One thing I noticed... and I don't know if I'm barking up the right tree here... is that processor use seems very high on the XP machine. It idles along fine, but then leaps up to extremes as soon as fairly simple tasks are executed. Even browsing can cause 100% usage.
Now what pointed me to this is another weird problem. While trying to replicate the jpeg corruption, I moved a bunch of photo folders to the XP machine and received an error stating "insufficient resources" available to complete the request. No further files could be copied, I could still browse shared resources, but I couldn't remote desktop to the XP machine.
So... I'm wondering if low system resources could have corrupted the jpegs during the copying process? Which brings me to the next question.... why is processor usage so high? I'm really scratching my head on this one, so please shed any light you can.
