User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.2a1pre) Gecko/20081203 Minefield/3.2a1pre Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.2a1pre) Gecko/20081203 Minefield/3.2a1pre When the browser crashes and restarts with about:sessionrestore and you click the "restore tabs' button twice (because of system lag, accident, etc.) it reloads all tabs twice. For me this has always been creating two duplicate windows full of 20 or so tabs. It seems very unlikely that this behavior would ever Reproducible: Always Steps to Reproduce: 1. Get about:sessionrestore screen 2. Click restore button twice Actual Results: All tabs open up twice. Expected Results: All tabs should open up once or give you a warning that you are about to open all of your tabs twice (since steps to reproduce would be overwhelmingly accidental). This is between minor and trivial. It has been a minor annoyance twice. In some sense it could be seen as a 'feature' given more options to the user but if this is the case I recommend a dialog box of some sort asking "are you sure you want to restore the same session twice?" just like we have for when you open all 40 tabs in a folder on the bookmarks toolbar.

I'm managed to reproduce this. I'd confirm it but I don't have confirm powers.

I tried to reproduce on both Linux and Windows XP, but can't get this. Could be Mac-specific. Shayne, what OS?

Comment on attachment 351678 [details] [diff] [review] disable the Restore button when it shouldn't be clicked r=me

Comment on attachment 351678 [details] [diff] [review] disable the Restore button when it shouldn't be clicked a191=beltzner

verified FIXED on builds: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2a1pre) Gecko/20090514 Minefield/3.6a1pre ID:20090514031229 and Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b5pre) Gecko/20090514 Shiretoko/3.5b5pre ID:20090514031203