I have been a fan of Ubuntu since first using it, and the 10.10 release seems to be good stuff. I’ve been using the release candidate for about a week and haven’t found anything that bothers me except that Xen does not yet support running the 2.6.35 kernel as a dom0. Once that happens, then I will have no complaints. Honestly, though, that isn’t their fault. Support for ATI cards seems to be nicely baked into the OS as well.