Installed Linux Mint 14 today within Virtual Box across two different host machines. On both hosts, Linux Mint 14 (64 Bit Cinnamon) is unusably slow.
Here's what I have for hardware:
Intel Core I7 3630QM
GTX660M 2GB VRAM
1TB 7200 RPM (obviously a platter drive)
What I had configured in the VM:
Linux Mint 14
2GB Dedicated to LM14
3D Acceleration - On
2 CPU dedicated (VirtualBox definition of 2 CPU's)
60GB Drive Fixed size
I tried this configuration on a Windows 8 x64 Host and an Ubuntu 12.10 x64 Host. I have been screwing around with the settings for quite some time. If I can't get this to work I have to abandon Linux Mint as an option for our development. Let me know if anyone has options to try and get this to run 'smoothly'