User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q312461; YComp 220.127.116.11; .NET CLR 1.0.3705) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 When you have a set of tabs open, and (mistakenly or purposefully) open another set, then right-click on the first window tab and select "close other tabs". Brower crashes. i suspected that mozilla was still waiting for the data to come back from the other, newly-requested tabs. But since the windows were closed, Mozilla was just confused and crashed. Reproducible: Always Steps to Reproduce: 1. open a tab set. Wait for them to load 2. open a second tab set. Curse b/c you didn't mean to open another tab set... 3. immediately right-click on the first, original tab (first window). 4. immediately select "close other tabs" 5. hourglass will persist; mozilla crashes 6. in addition, any new tabsets added during that session will be lost -- why wouldn't those be written out dynamically rather than when browser is closed. Actual Results: crash Expected Results: not crashed (terminated waiting-for-data from requested pages state) I am a convert.
Your Mozilla version is rather old (from June 2003). Could you try if you still see this bug with Mozilla 1.5rc2 or a Nightly? Concerning 6.: There now is a preference whether opening a new tab group should clobber the existing tabs.
Appears to be a non-issue with 1.5RC2. Thanks for the nudge to upgrade. Got it to crash only once with 1.5RC2, when really, really trying to *make* it crash. Note: the "replace existing tabs" setting, which is the default, makes it impossible to duplicate this error. Thus, I think the user base is safe from this problem.