Yes, 3.2.12 and the ones from the ubuntu repo ( 3.8 ). Also uninstalling and reinstalling guest additions. I'll try with xubuntu since that's what I was using before with 3.2.
Edit: I blindly clicked away a message box that told me the guest additions version needs to match the host VirtualBox version to have 3D acceleration work. I'll uninstall VirtualBox 4 and install 3.2.12 and see if that works.