Try another file browser that doesn't do that.
I have a problem with windows xp. I have aprox. 10,000 mp3's within 1 folder. When I scroll through the list, within a few minutes the screen will reset(like it is refreshing)and scroll back to the beginning of the list. This happens every time. I do not have any downloading program sending information to that folder so, that is not the issue. It is a RAID drive but, it seemed to never have this problem until the list got so large. Is there a auto refresh in windows xp on a certain amount of files? Or do you have any ideas??