My doesnt lag at all either. Its weird, I only have 512mb too. It only lags when I start it up, but thats normal :-/
I have CS2 and hate it with a passion. Unfortunately, I can't find my CS disc. The original CS (8.0) was the best Photoshop ever.
There is no real reason to buy CS 2 imo. It will just be a bigger photoshop taking more space in your computer. Ill stick with 7.0 until they change something really important or create great new features
I use 7. I have tried CS 2 and 8. But i like 7 the best for some reason Also, CS 8 messed up and deleted itself from my computer and wouldnt work anymore ;( Oh well, 7 is good enough for me.