No, you probably won't have the answer to your problem, especially as related to desktops. It will just give you some background on the issues.
As is in there somewhere, just don't put too much weight on the flashing light. Nobody really knows what it is measuring.
I would suggest you use noatime in your fstab mounting lines however. That would be safe and help your problem. How much I couldn't say.
Sorry, but I don't have the time right now to get too deep into this. Maybe later if you wish.