I installed Mint 13 Cinnamon on my HP laptop. When it first rebooted after the install things were fine except that I was running with a low screen resolution. So I installed the NVidia drivers. Now I am back to a 1280x800 screen, but I have lost the task bar and and windows borders. I even tried running a Gnome session, but no taskbar or windows borders there either. I managed to get a terminal window open and installed MATE, and logging in with a MATE session gives me the task bars again and windows borders.

Doing some googling it appears that many other are having issues with nvidea and cinnamon on MInt 13. Hopefully there will be a fix soon, until then it might be best to avoid this combination. But if you have found a fix for this, please share!