Thank you for the crash ID.

Is it correct that you are running Firefox 15 on Windows 7? Did you try Firefox 21 to see whether older bugs that might be causing this have been fixed? When I look at the report of recent crashes, it seems to disproportionately affect Firefox 15-19, and be rarer in Firefox 20-21.

You can always grab the latest installer here: https://www.mozilla.org/en-US/firefox/fx/#desktop (scroll down to the green button).

Got rid of KB 2670838 and can start internet explorer and firefox, however firefox is extremely slow to respond, and it tells me that the history and bookmark functions are out of use as a firefox file is in use by another program.

New crash id: Crash ID: bp-2e969a2f-d7a7-4e82-acc3-816ff2121203

jscher when i reinstalled it asked if i wanted to upgrade so i did, i assume this is with the latest version?

Hi mattys, you can check your version under Help > About Firefox.

To resolve the in-use condition, you could try restarting Windows, if you didn't do that after removing that KB. There also are some "lock" files that could be cleared but I don't have a reference handy. Probably another volunteer will be able to relate those details.

You can check for problems with the places.sqlite database file in the Firefox profile folder.

• http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
• https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file

• https://support.mozilla.org/kb/The+bookmarks+and+history+system+will+not+be+functiona

ok version is 21.0 will completely clear out all mozilla related items restart the computer then reinstall and see if that works

ok so cleared out all %APPDATA%\ as in roaming local and system of mozilla stuff, deleted all mozilla in program filesx86 and reinstalled 21.0 of firefox and its working now.