Desktop manager 4.6 without media manager works perfectly fine under Windows 7. I have had no isses with it. Blackberry Updates (BlackBerry - Update your Device Software) also finally works despite not working under Vista SP1 on the same machine nor Windows XP on my work laptop.
Windows 7 is showing a lot of promiseand I have had minimal issues with it. It is a beta at the end of the day but it works really well for me that I use it as my primary OS. Probably the only thing I can fault is the power management. If I run it in high performance mode, it gets pretty hot and the fan is running full pelt. Running it in balanced works just fine and it is quiet as a mouse
Posted from my CrackBerry at wapforums.crackberry.com