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Why do I constantly receive a pop up telling me "this URL is not valid and cannot be loaded?"

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Why do I constantly receive a pop up telling me "this URL is not valid and cannot be loaded?" How can I stop this pop up?????? HELP!!!!!

This happened

Every time Firefox opened

== A week ago.

Why do I constantly receive a pop up telling me "this URL is not valid and cannot be loaded?" How can I stop this pop up?????? HELP!!!!! == This happened == Every time Firefox opened == A week ago.

All Replies (2)

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Do you have the Google Toolbar installed? If so, go to Tools > Add-ons > Extensions Select the Google Toolbar, click Disable__ then restart Firefox.

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It looks that the Google Toolbar is installed with Firefox/3.6.3 GTB7.0 in the user agent.

See also Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems