VirtualBox 3.2.10 is released on 30Nov2010.
The installation package can be downloaded from VirtualBox' site.
I have installed this version and so far I am happy with it. Existing VMs for Mac OS X, Win7 (64-bit), WinXP, Win Svr 2003, Win Svr 2008 R2 and Ubuntu are running fine.
Please referr to the Changelog for a complete list of the changes in this maintenance release.