User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6 Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6 TB version 1.5.0.5 (20060719) on Mac OSX, 10.4.7 build 8J135. I receive log file notifications from our web server on a cron, one of these has a msg body text of about 1578 lines long, I get this daily. TB opens and reads that email just fine, but if I try to forward this to someone else on the team, the composer window opens, draws a blank window on the screen and then we get a busy beach ball and Thunderbird "dies".. if I check processes it show "Thunderbird (not responding) I have no choice but to force quit. I can copy the text and create a new memo and when i try to paste into the blank compose window, TB behaves the same as above: freeze. I have resorted to copying the text, saving in BBEdit and sending as an attachment. note, this is possibly related to bug 345202 on Linux Reproducible: Always Steps to Reproduce: 1. create a text file of 1500 plus lines 2. try to paste this into a new compose window. 3. have someone else send you and email which has 1,500 Plus lines in it and then try to forward that to someone else. Actual Results: TB Freezes everytime. Expected Results: Compose window should open and display the entire msg being forwarded in the msg body area. or allow you to paste. TB version 1.5.0.5 (20060719)

Please test in Thunderbird 2.0 Alpha 1 or on trunk. Also, please use Sampler.app to get a sample from the hang and attach it to the bug.

... and if turning off inline spell checking helps in 1.5.0.x -> dupe of bug 324521.

Yeah, this is a dupe. Thanks, Magnus. *** This bug has been marked as a duplicate of 324521 ***