I just upgraded from 9.10 to 10.10. The 2.0.0.24 version of Thunderbird never appeared up when I ran "top -S". Version 3 CPU usage is always above 39% and sometimes up to 65%. As far as I know, Thunderbird isn't doing anything except checking for new messages every 5 minutes. Does anybody else see this? I have a laptop an that is quite a hit on the battery. Don