Hi all, dunno if somebody else already posted something about this matter. I'm working on a Dell Precision laptop M90, with the following configuration: Processor Intel® Core2 CPU T7200 @ 2.00GHz, 2000 Mhz, 2 Core(s), 2 Logical Processor(s) Installed Physical Memory (RAM) 4.00 GB Name NVIDIA Quadro FX 1500M I mainly use my laptop for graphics works, therefore main application I do usually use are: Adobe After Effects Adobe Photoshop Adobe Illustrator Maxon Cinema4D Blender 3D Nextlimit Realflow PFTrack and some other small apps. Said that, I'm pretty satisfied about Vistax64, but due to some trouble with the openGl drivers, I've to keep the DWM service running and there's no way to turn off Aero. This means that a lot of resources are taken by Aero and in certain situation the laptop is not such as responsive as expected (and in certain situations some weird video glitches happens, but all work fine) Now, since there should be some Nvidia driver for my Quadro and since the CS4 suite should run fine on XPx64, I'm just wondering if somebody else is in a similar situation and could confirm that would be better (or not?) to downgrade from Vista to a light weighted OS like XPx64. Any help or suggestion would be really appreciated. Thanks in advance. Best, Piero