I've used cinnamonf for a while, but had some issues with it.
- Pidgin icon sometimes become invisible.
- Menu load is realy slow (I had an i7 Quad Core!), comparing with old gnome menu (Alt-F1 shows instantly), it takes too long to show (Above one second), I still prefer the good old Gnome-do.
- Desktop notifications sometimes stops working, out of the blue.
- Eclipse (java) modal windows, sometimes leaves a gray square that does not go away.
MSGE also has its gotchas. Mate (caja) IMO lacks some important functions for the file manager, for instance the "share" options, in its contextual menu; themes managment is also cumbersome, default looks like gnome 1.x, on a very old Red Hat 7.1.
I'm now pretty comfortable with the "fall back" mode; in Mint 12, is the same as session named "Gnome classic" on login screen, but you also have this alternative:http://www.dedoimedo.com/computers/gnom ... lback.html
Another incredible confused from gnome3 team, is that the good old right click, does nothing in the panel, you have to use ALT-right click, I've never seen in 15 years of professional computer science work, two things so rejected as Unity and Gnome shell.
I like what Cinnamon promise, but it is still very young to be used in a production stage.