Thunderbird freezes while I'm typing text in the body of an e-mail, both randomly and after I've typed 40 or so characters. The process pins one of my CPU cores at 100% for 5-10 seconds, then drops the last 15 - 20 characters I've typed when it resumes. Maybe there's some buffer setting that needs adjsutment but it's hard to imagine overloading an input buffer and triggering a freeze / core pin with a few dozen characters. This doesn't happen with any other application, and obviously shouldn't with Thunderbird. Increasing mail.db.idle_limit and mail.db.max_open had no effect. Any thoughts would be most appreciated.