Hi Wayne, I've had a few instances of Firefox 144 having multiple tab crashes and then becoming unusuable. Exit and Restart are not sufficient to shut down the program, I also needed to use the Task Manager. I don't have an explanation for the problem, but here are a couple options: (1) Share some crash report IDs here. See the following article for more information: [[Firefox crashes - asking for support]]. (2) Share some crash report IDs with Greg Stoll, a developer who is collecting them over on Reddit. For example, in this thread: https://old.reddit.com/r/firefox/comments/1oaonp0/firefox_crashing/