A weird photoshop problem.. HELP!

i got photoshop cs 3
in the last few days, every time i wanna save a pic the program is stuck!
the saving window is on for half a sec, and then it disappear and the photoshop is stuck!
i installed internet explorer 7 so i thought it could be the problem for some reason, so i reinstalled the former version and i also reinstalled photoshop but the id didnt help.
btw, the windows task manager dosent show that the photoshop is stuck..
u have any idea what can it be?
Thnk u!! :)