Not enough RAM there.
I use PS7 and have 2G of RAM. Sweet. No worries. I have FrontPage, Excel, Outlook, RawEssentials, FireFox, and PhotoShop all running along side each other.
1.99Ghz machine, AMD64+ 3200 whatever that means, 4x 512 chips.
Photoshop, must have 1G of RAM minimum to sing along. Stuff in as much as you can. Pricey on a laptop though.
Photoshop eats RAM for breakfast, I think my dad has 8GB of RAM in his Mac or whatever the max is. But that is overkill, a dual processor and again still on PS7.
I bought my PC as 512mb, tested PS7 with it. Not fast! Dumped in 512 more. Sweet. So I stuffed it full. I think my 512 chips were like £30 each off eBay.
Q: Why PhotoShop CS and CS2. I've used CS as a trial. Didn't see anything new anywhere. Sure you can open RAW files. But RawShooter Essentials is free off the net. So I dual run RSE for sorting through my RAWs, open the ones I want (actually they automatically open in PS when you convert them to tifs) and PS7 for the actual editing. I guess you can still buy PS7?