User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-US; rv:18.104.22.168) Gecko/2008120121 Firefox/3.0.5 Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-US; rv:22.214.171.124) Gecko/2008120121 Firefox/3.0.5 Essentially, it's what I said in the summary. Firefox does nothing when a past page is selected from the history menu. It happens the first time you try it in a session and also the first time you try it in a new browser window. In these cases it seems to happen every time, or at the very least, almost all of the time. It does not happen, at least not every time, when you have already tried it in that session and/or browser window and you open a new tab and try it. Fortunately, Firefox usually responds when you select the web page from the history a second time. I would say that the bug is irritating more than anything else. Also, it has been happening for several months and in that time, there have been several Firefox updates. Reproducible: Always Steps to Reproduce: 1. Open a new browser window 2. Go to at least four different websites 3. From the history menu, select any web page other than the last or current one Actual Results: The browser has no response. Expected Results: The browser goes to the web page previously accessed. The following extensions have been on when the problems have been happening: Adblock Plus 1.0, British English Dictionary 1.19, Customize Google 0.76, Download Statusbar 0.9.6.3, Save Session 126.96.36.199, Tab Mix Plus 0.3.7.3.
so, please try in safe mode with all extensions disabled: http://support.mozilla.com/kb/Safe+Mode
not enough informations to reproduce, could be caused by an add-on
Bug 451915 - move Firefox/Places bugs to Firefox/Bookmarks and History. Remove all bugspam from this move by filtering for the string "places-to-b-and-h". In Thunderbird 3.0b, you do that as follows: Tools | Message Filters Make sure the correct account is selected. Click "New" Conditions: Body contains places-to-b-and-h Change the action to "Delete Message". Select "Manually Run" from the dropdown at the top. Click OK. Select the filter in the list, make sure "Inbox" is selected at the bottom, and click "Run Now". This should delete all the bugspam. You can then delete the filter. Gerv