I tried to enter a gnome failsafe session as well, I get a message popup windows from gnome with something about the gnome power not setup properly and then nothing, the Xsession hangs.
I can login properly with the Xclient session (I'm just told that there's no Xclients file) and I get an xterm. I can also login with just the failsafe terminal session. -- This message posted from opensolaris.org
