I installed the 3.3 RC (Windows 7, 32-bit) then uninstalled it because it seems to have memory leaks or something equivalent. Opening a Windows folder wasn't able to display the thumbnails for images, CCleaner (used to empty Recycle Bin, clean up Cookies and temp files, etc) wouldn't run properly, etc. I kept having to reboot the computer, several times in one day. I didn't bother to uninstall, just re-installed LR 3.2 and everything's fine again.
Mike.