Same story here. That was on a machine that was bought specifically with Vista in mind (I'm going to have to support that OS at some point.) Some necessary stuff didn't run and I ended up having to beta a VPN client for Cisco just to get in. That, fortunately, works great but I don't think it's been released formally even yet.
The thing wasn't an unmitigated failure and there were some things I did like, but overall I'm thinking it's still a work in progress. IMHO, of course.
I tried the 64-bit install at first. Driver support was way too “iffy” and it seamed rather unstable. Disk I/O appeared crisper but otherwise I saw no difference with the 32-bit.
I had no problems with the networking in the 32-bit. And the Aero interface is kinda neat. I guess my biggest gripe is that it was just plain s-l-u-g-g-i-s-h.
There is some neat stuff in Vista, but it is not a finished product. It would seem that MS is following the industry trend of “release now, patch later” to generate revenue as soon as possible.
I will try again when the Service Pack comes out.