I have windows XP Pro and NTFS

I frequently get dektop icons being re-drawn and whilst this is
happening the desktop freezes and all the icons look white. No folder
re-fresh or anything else occurs until the icons have been re-drawn.
This sometimes also happen if I just select a new folder. Explorer
will freeze the desktop icons will re-draw and when that is finished
the folder will open..

Anybody any ideas how this behaviour can be stopped