Hi All, Running Thunderbird 15.0.1 on Ubuntu 10.4 (Please don't suggest changing my email client or Linux to your current favourites.) Thunderbird is doing a major re-indexing of messages, which is really pushing my CPU to its limits. (i.e. getting over 60C core temperature, email process using 100-160% of CPU usage - dual core CPU) Full details of my hardware, and the CPU usage are documented here: http://forums.mozillazine.org/viewtopic.php?f=31&t=2399189 That was this time last year. Doing the same thing now with my updated version of TB. (Only happens for a couple days, once a year, when I shift all my Sent messages of the previous calendar year to an "archive" folder.) Could any of you point me to instructions to get Ubuntu to limit or choke the demand that the Thunderbird process calls upon the CPU? Thanks =very= much. Carl Turney Bayswater