Err, mitch, i dont know why you get all those problems, but i beta tested Vista from the first pre-beta, all the way to the last RC release (before RTM) and i didnt even get any of those problems,
and those were betas, and to add more input, i just switched to Vista 3 days ago ( i promised myself i would switch to Vista the next time i had to format my pc, and 3 days ago i had to re-format, so now im on Vista), and i still havent come across any of the problems you've mentioned nor have i come across any other problems, in fact the only problem i've found is that i should've switched to Vista earlier instead of waiting so long.
P.s for the record, im on Vista Ultimate too....
Windows 7 SP1 x64, Sandboxie v3.70 x64 with Experimental Protection, GnuPG, OTR (Off-The-Record), Sticky Password, My Brain.