Save-In, closes list of drives within 2 seconds

[Zyphria]

Whenever I go to Save anything in any kind of program, Word, Photoshop, etc, when I go up to change the "Save In", the list of drives pops down as normal, but without me clicking anything, it closes up as if I had clicked already selected directory/drive. It's pretty random, sometimes it closes in 2 seconds, sometimes in 8 seconds, sometimes in less.

Now if I go to open anything, and I go to the "Look In" I see the list of drives/folders...but it acts completely normal, and doesn't "close" until I choose to.

Any hints? Windows XP SP1.