User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b3) Gecko/2008020514 Firefox/3.0b3 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b3) Gecko/2008020514 Firefox/3.0b3 With more tabs open that the screen can display at once, i.e. so the tabs are uniformly the same size, fast click as much as you can the 'x' on a tab to close it. The first tab usually closes, but the rest fail to do so. This behaviour is not demonstrated with FX 2. Reproducible: Always Steps to Reproduce: 1. Open more tabs than the screen can handle (i.e so they are all the same size, and are the smallest size FX shrinks them to) 2. Click on the red 'X' on any tab, and continue clicking as fast as you can (equivalent to constantly double clicking works for me) 3. The first tab (maybe the first couple) will close, but the rest will remain open despite now clicking on the next tabs 'x' Actual Results: The remaining tabs will not close when repeatedly clicking to close them Expected Results: The tabs should close It is a problem with all of the new beta versions of FX3, and does not occur with FX2.

Sounds like bug 409215. If you think it is, please resolve this bug as a duplicate. Thanks!

Yeah, it was, I tried searching before posting but didn't find that one, thanks for the heads up