Ubuntu 12.04 (3) x64
After running scheduled update, cinnamon was also updated to 2.0.
Upon rebooting, cinnamon came back with crashing messages, refused to restart and reverted to gnome desktop.
Googling showed a missing file in the ppa, and changing the ppa to cinnamon-nightly, and running distribution upgrade, solved the problem of installation.
Further googling showed the need to upgrade nvidia from version 319 to version 325 (via edgers), which improved the display singnally.
Cinnamon is stable (so far), but is not displaying the themes, like icon, cursor, window and gtk themes at all, but is stuck steadfast on Adwiata.
gnome tweak tool and ubuntu tweak all show the selected themes in cinnamon, which display properly in unity and gnome only, but cinnamon displays only Adwiata.
Googling has produced not results so far.
Useful suggestions would be appreciated.