I was working on the Vista December CTP and Office 12 for couple weeks and had to switch back to Windows XP because Vista didn't had driver support some of my hardware stuff and it started giving problems. After switching back it worked smoothly. But in last couple of days it started giving problems ... unexpected sudden crashes of office applications, Hibrenate is not working ... etc etc. I have Vista February Build and Office 2007 downloaded, but still couldn't install due to my schedule got busy unexpectedly. 

It sounds like ... my machine is telling me ... I NEED VISTA ... I NEED VISTA ... !!!!!!!