Comment 5 for bug 1081842

I have exactly the same issue. For the first few days using Mint 14 x64 cinnamon edition I was able to log out and restart cinnamon and the menu worked correctly, but this no longer helps.
I can still access 'All Applications' and left/right click still works as expected, but I can not select categories to filter the applications and mouse hovering does not highlight my choice.