Two things come to mind straight away, one sounds silly but I've seen it cause problems in older operating systems, don't know why though.
1. If the My Docs folder is not the first folder on your desktop (top lefthand corner), then place it there.
2. Any chance that you have any large picture files, like bitmaps or Tiffs, in the My Docs folder with the folder set to view thumbnails? If so then Windows might be working away trying to show the pics, and only appears to have frozen.
Had exactly the same problem recently,i thought i had a corrupt file within my docs.This cure the problem click here its free to a degree,it will repair errors but only 10 at any one time,the full version fixes all errors in a click. Another thread with similar problems click here