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keep getting script error chrome:/browser/content/tabbrowser.xml:537

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I keep getting the error message that a script is not working. This is the script that is responsible. chrome:/browser/content/tabbrowser.xml:537

I only get this message playing farmville on facebook.

I also notice that facebook will hang firefox quite easily.

I tried using IE8 with no problems at all. No hangs in farmville or while scrolling on my wall in facebook.

I keep getting the error message that a script is not working. This is the script that is responsible. chrome:/browser/content/tabbrowser.xml:537 I only get this message playing farmville on facebook. I also notice that facebook will hang firefox quite easily. I tried using IE8 with no problems at all. No hangs in farmville or while scrolling on my wall in facebook.

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Please try the steps on this page: Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

If that doesn't help, please let us know and we'll try to figure out something else.