I didn't notice any relevant complaints regarding 11.2 in the archives. The bootup & shutdow may be different problems.
Randomly my recent install boots up fine or hangs with a blank black screen. A Ctl Alt F2 gets me to a prompt. Startx returns a lockfile comment that X is already running.
From here I can shut 11.2 down and restart it OK. There must be a bootlog kept in /var somewhere.
I haven't tried the non-automatic bootup.
The shutdown randomly drops back to the logout screen. Usually a shutdown command from there will shut it down. Sometimes shutdown doesn't work, but restart will finish the shutdown.
Is the 11.2 autoboot function with gnome solid? Heboland