[krahmaan]

That might be a way to get around the problem, saving as a bmp, gif or png. But your root problem just may lie elsewhere. You may be running low on disk space. You might want to check 'My Computer' then go to your hard drive, to see if you're close to using half disk storage. Photoshop requires a lot of disk space and RAM to function properly. Possibly why you're now experiencing this problem for the first time.

Check it out, because you may want to start transferring some of your artwork to disk or an external hard drive or upgrading. I've had this problem with my music programs before. So every once in a while, I clear my computer of all audio projects. Placing them on a cd-rw or cd-r. Opening up space so my music programs will function properly.

You also may want to try disk clean-up, and disk defragmenter too. They're found in accessories/system tools. Defragmenting helps to organize loose files on the hard drive and should be done on a monthly basis. Or at least quarterly. It helps your programs to run smoother.

Good luck.