Every time I open a new doc in PS CS4 and use the MARQUEE tool, it "locks" itself to the upper left-hand corner, and I can't resize it or drag it anywhere. It only makes a selection out to where I initially click the mouse. Very frustrating. I re-installed Snow Leopard along w/ CS4 Design Premium a month ago after a HD implosion, but it's doing the same thing w/ this new install. And I'm up to date on all software, etc. It's only remedied by adding a new layer, or switching Spaces, and switching back. Any ideas?