My biggest problem with it was that explorer.exe would just hang. So I try killing it in the taskmanager, and *boom*. It would kill explorer but not respawn it. Got seriously obnoxious when it went from doing that every 3 weeks or so to a few times a day, so I went back to FBSD

[edit]OK, so losing explorer and the fact that I never got it to connect to the empeg beyond the initial upgrade to 2.0b3 were the most annoying things. I did like how quickly it booted though.[/edit]