When a file (including PSD) is opened from LR into CS4 the default saving file is TIFF. Is there away to make PSD as the default saving file.

At the moment; when I save a file in PS I have to go >save as>save as PSD>save. I have to do this even with a PSD file which does seem weird.

I just can't go Ctrl+S while working because it saves as a TIFF

I'm about ready to drop CS4 and go back to CS3. Any comments??