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beta 4 hangs from the start, created new profile and it also just hangs

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Since installing beta 4 have not been able to open gmail, tonight installed new update to beta 4 and now firefox hangs and wont even open. Created new profile first time for access to gmail which worked, tried this time but cannot even get firefox to open.

Since installing beta 4 have not been able to open gmail, tonight installed new update to beta 4 and now firefox hangs and wont even open. Created new profile first time for access to gmail which worked, tried this time but cannot even get firefox to open.

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

  • Don't make any changes on the Safe mode start window.

In Firefox 4 Safe mode disables extensions and disables hardware acceleration.

  • Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"