Also have this problem: on Xubuntu 12.04 with thunderbird version 17.0.3+build1-0ubuntu0.12.04.1
Removed all addons, tried removing all sqlite databased, still 100% usage.
Also have this problem: on Xubuntu 12.04 with thunderbird version 17.0.3+ build1- 0ubuntu0. 12.04.1
Removed all addons, tried removing all sqlite databased, still 100% usage.