Continuous HD activity

So I have continuous hard drive activity and I can't figure it out. The HD light flashes about once per second. All the time.

A few days ago, I also got a new segate 7200.11 HD and reinstalled XP. The old HD is still doing the flashing, and the new one (hard to tell forsure), is almost constantly accessing as well!! It clicks about twice/second and it's driving me crazy! It will stop sometimes, but seemingly randomly starts again.

Indexing is off. I tried Process Monitor and filtered for file activity but it doesn't seem to show anything right when the HD is doing its stupid accessing.

2HD's, both constantly working. What gives???

Thanks for any help...

 

So can anyone help with this, or is this in the wrong forum? The issue is still going on...

 

My very first thought - malware/virus. Check for them & run chkdsk /f on all the partitions of both the hdds.

 

Do you have a sufficient amount of RAM or does it happen when there are several programs open? If the system runs out of available RAM it will start writing to the pagefile on the HDD.

Could it be a security program checking the files? Running a full scan of all the drives occasionally might make make it/them happy.

Matt