Since updating to the latest Cinnamon modules and mint kernels (13 cinnamon), etc through apt-get upgrade and dist-upgrade, I've had numerous problems.
First, my login time (from entering my password to getting my desktop up) is now a minute, where it had previously been seconds.
It takes another minute or two after that before my computer will even acknowledge the presence of my mouse.
It moved my window applet into the center of the panel, instead of left justifying it. My mythtv frontend stopped being able to reach the backend even though it was running. I don't know how much of this is interrelated, but I would love some help in working out why Mint went from working to my satisfaction to being awful.