Linea,
I think the Vista vs. XP issue may be dependent on the ruby/scale of model/etc. I actually have 2 computers in adjacent cubicles and have seen similar issues on both. I don't really get a lot of Bugsplats, but usually when they happen it's at the most inopportune moments so they feel weightier.
My main problem may very well be that I'm inpatient. I'm unwilling to sit at my desk for 10 minutes HOPING that something will happen in less time than it would have taken me to do it without a ruby. If there's no progress bar then I get to just stare and hope something's going on. If there IS a progress bar I have to stay diligent, making sure to not click the mouse outside of the SU window else the progress bar goes away and never comes back - but I still have to move the mouse occasionally out of fear that my screen saver should kick on to similar affect. I think if there were a reliable progress bar that would give me a quasi-reliable time estimate (something like the typical Windows progress bar that pops up when you download files) that would probably solve 80% of my issues.
I know that's not something the the ruby programmers can control. I don't really think most of the issues I encounter have much to do with the programmers. It seems more like a SU issue. I'd like to see SU take the time to integrate some of the more used rubies into the program itself or find a way to get a good progress bar.
-Brodie