hey andrian, it may be that your prefs file is corrupted. Try deleting it (ctrl/alt/shift - during program launch), also look at how your PS scratch disk is set up.

Go to Edit>Preferences>Plug-Ins & Scratch Disks, and change the First from "Start up" to "C:" unless you have your drive partitioned, in which case set your First to the largest partition.

Don't set your memory allocation to more than 75% to 80% of your available RAM (to be used by Photoshop). Any more than that and you'll hose the operating system.

Hope this is helpful, (it's also why i still use Win98@home and 2000@office)

:)
retrocity