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When I try to clear browsing history the page locks up and I get a 'programme not responding' message

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I go to 'Tools' click 'clear browsing history'. Nothing happens and when I try to shut down the page, the 'Programme not responding' box appears.

I go to 'Tools' click 'clear browsing history'. Nothing happens and when I try to shut down the page, the 'Programme not responding' box appears.

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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).


Another possible cause is a problem with the file places.sqlite that stores the bookmarks and the history.