I must say, W7 is pretty impressive thus far. But a heads up for anyone planning on using the beta as their primary operating system (bad idea).
Punkbuster is not compatible with Windows 7 on many many games. Furthermore, I sent an email to evenbalance asking why this is, and they replied simply: "We do not have the time or resources to provide support for beta OSes"
Sad though, considering if they wait for the W7 release, they will be swamped by millions of consumers wondering why their product doesn't work, when now they have a chance to work with technically inclined users to have this problem fixed prior to release.
If any of you would like to voice your concerns to evenbalance about their lack of support, please send them a ticket:
http://ssl.evenbalance.com/troubleticket/
Maybe if enough of these tickets are created EB will snap out of it and give W7 beta users a functional pb client.