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autofill dropdown menu quickly disappears

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when a text is entered into a text box, the autofill feature dropdown menu quickly flashes on and then disappears. i have tried rebooting and updating the version of firefox. how can i fix this?

when a text is entered into a text box, the autofill feature dropdown menu quickly flashes on and then disappears. i have tried rebooting and updating the version of firefox. how can i fix this?

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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).

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

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

If disabling hardware acceleration works then check if there is an update available for your graphics display driver.

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I've tried all aspects of troubleshooting listed in the links you provided, tried starting in safe mode, disabling add-ons, extensions, and using default theme. nothing seems to be preventing the problem any other suggestions would be helpful and greatly appreciated.