Most of my installation issues have been because of updates (mostly pluto-dcerouter related). Luckily I was able to figure out early the reason why MCE wasn't working exactly as I figured from a 1.0 product and it wasn't because of my limitations with Linux. It was MCE itself. I'm hoping in the 1.1 release that the ability to update *anything* package-wise on the box is turned off by default. This is an assumption, but if 1.1 works great and has been tested with Kubuntu, why screw with that with package updates that may break aspects or all of MCE? Release 1.1 with a feature freeze and get the fundamentals working (i.e., MythTV) for 1.2.
Personally, I've had fun installing MCE. Whenever I see an old PC nowadays, I say, "Cool. A media director."
Not including VMWare installs, 12 for me.