Since upgrading to 12.04, evolution keeps freezing. I have tried the forcequit icon, which does nothing for it. I have tried switching to a new terminal window and running either 'killall evolution -v' or 'kill xxxxx'. Both commands report that the process has been terminated, but that is not the case. Evolution is still running and locked up. I haven't had any other programs lock up, but both kill commands work fine with other programs that are actively running and not locked up, evolution included.

Why? Why does evolution keep locking up and why does kill not kill?