Your observations are about the same as what I've
experienced- this includes one laptop and one desktop,
both rather new and loaded. I really don't understand the
problem Vista has with thumbnails, but it does. I've also
noticed the slower file transfer speeds, too. Be it from
folder to folder, drive to drive, or to/from a network drive.
It does exist and is noticeable.
However, just for kicks- I installed RC2 on an old Dell.
Dell Dimension 8200. I reckon I got it in late 2001 or
maybe early 2002. 1GB Rambus DRAM, 120GB hard
drive, 64MB Nvidia GeForce Ti200, and a P4 2.4Ghz.
Vista works absolutely wonderfully on that old girl.
No Aero Glass, but Vista still looks good and I swear-
seems quite speedy. No ReadyBoost, either- it only has
USB 1.1. That Dell was quite powerful back then, but not
by today's standards. I even play around with the VMWare
Player I installed in Vista on that computer- works great.
Thankfully, I haven't had to replace one of the RDRAM
sticks- they are quite expensive.
Vista does scale very well, and still looks good even without
the Glass. I am really surprised at how well Vista RC2 runs on
that old computer.
-Michael