Just in case anyone's still reading after 70+ pages of messages...
HP dv6000 (dv6452se, Intel Core Duo, Intel 3945ABG wireless, 945GM graphics).
Upgraded from Feisty to Gutsy, suspend didn't work, there were a bunch of other weirdnesses, I figured that some of them might be because I had some older kernel modules that were keeping my kernel back, so I decided to backup my user directory and try a fresh install.
I'm on my third raw install (first two were Xubuntu, last one is Ubuntu). Suspend appears to only work about one in six attempts, when I run it /etc/acpi/sleep.sh from the command line. When it does work, wireless doesn't come back. I'm in the midst of a restore on my home directory which has screwed up my X authorization keys temporarily, but I'm not sure that OpenGL is accelerated now.
In the "good news" department I don't have to install the 915resolution module to get my graphics set up correctly. Haven't delved into audio too heavily, don't yet know if I'll be doing the ALSA shuffle, but at least sound plays.
If I could drop back to Feisty easily, I would, but if all I have to do is to manually shut down and boot rather than having suspend work I think I can live with it for a while. My other machines are going to stay at Feisty for a while.