It's all in the question, really. Currently running Evolution 3.6.0 on Ubuntu 12.10 and, as anybody who has tried this at all will know, it locks up regularly with a 'saving user interface' report and several 'unknown background task' reports. The only way to exit under these circumstances is to kill Evolution cold. This is making Evolution almost unusable.
Is it possible to back-port manually from raring to quantal or is there somewhere to request that it should be done at distro level through the proper Ubuntu channels?
I was able to make Evolution much more usable, and stop all the 'Saving user interface' lockups by unchecking the option to show sender's photo from address book, i.e. edit > preferences > mail preferences > headers > sender's photograph.
Can't remember where I got this from, but believe it was from one of the developers. Hope it helps those still struggling with this.