When I accepted the inital up date box, I was on a BUMS Rush, in the Incompatable add-ons box I could not view all Incompatable add-ons that were disabled.
The only button, at the bottom of that box, the active was Check now. The Back button was disabled. The Incompatible Add-ons window showed 8 disabled Add-ons and indicated more.... but would not show the others. The , <back button was disabled. </p>
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Sorry I can't follow what you are saying, but it does look like you have or had problems with the Back button.
Back/Forward Home don't work in 7.0.1 due to network.http.max-connections being upped to 256, reduce back down to 32.
Back button problems -- right-click on tab for tab history, or hold a couple of seconds for tab history.
Extensions that may interfere with Back Button, and these are already listed in Problematic extensions for other reasons
- McAfee Site Advisor see 805964 (update perhaps 3rd week July 2011)
- Yahoo Toolbar (https://support.mozilla.com/questions/845691)
back/forward: CLEAR HISTORY cor-el code but not easy to implement via error console https://support.mozilla.com/questions/847382 and my comments in https://support.mozilla.com/questions/847384
Back/Forward: navigation/buttons are disabled -- http://kb.mozillazine.org/Locked_or_damaged_places.sqlite Back/Forward: buttons missing -- http://kb.mozillazine.org/Corrupt_localstore.rdf see more complete answer in https://support.mozilla.com/questions/851574