I've noticed some bad behavior with Firefox since the last automatic update. I use Win2K at home, XP on the office laptop and both tend to slow to a crawl. I left my laptop running last night, with all my normal tabs opened, and the machine practically wouldn't respond this morning. I think there's a memory leak somewhere in the code. I closed out Firefox, waited for a few minutes while the hard drive chugged away, then used task manager to kill the process. Restarted Firefox & everything is just fine.