Ok so I've done a little research, so far the upgrade sounds like it's getting some positive feedback, with very little problems. The only problems with the Windows 7 upgrade with CS4 are:
-CS4 Setup Discs will not launch - but downloaded "trial" setup files from Adobe's website will install no problem
-There is an issue with Dreamweaver launching and occasionally eating up memory for a few seconds, then releasing
-There is no codec for Photoshop - so .psd icons are not visable
-Photoshop launches automatically in 64 bit mode
I'm curious if there are any Adobe folks (or community experts) out there who have updates on these issues, and if there are any issues that I've missed?
I've purchased the W7 upgrade and will install it in a couple of weeks when it is released - I just wanted to make sure I'm not going to dig myself into a hole by installing the upgrade. I know that Adobe developers can't snap their fingers and make things change overnight, but if anyone who has information can help me (and other viewers of this post) out, that would be much appreciated.