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Warning: Unresponsive Script ie: Script: chrome://tavgp/content/libs/include,js:572 How do I get rid of this waring permantly / remove it

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A dialog box pops up on the screen while I am in Fire Fox v. 3.6.15 browser. Warning: Unresponsive Script.

A script on this page may be busy, or it may have stopped responding, You can continue to see if the script will complete.

Script: chrome://tavgp/content/libs/include,js:572

This problem started after I uninstalled Google Chrome.

How can I disable or remove this script. Any of web sites I have been on describes this as Fire Fox extension mismatch or problem. This script really slows down the loading process of the Fire Fox browser.

A dialog box pops up on the screen while I am in Fire Fox v. 3.6.15 browser. Warning: Unresponsive Script. A script on this page may be busy, or it may have stopped responding, You can continue to see if the script will complete. Script: chrome://tavgp/content/libs/include,js:572 This problem started after I uninstalled Google Chrome. How can I disable or remove this script. Any of web sites I have been on describes this as Fire Fox extension mismatch or problem. This script really slows down the loading process of the Fire Fox browser.

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Probably caused by an AVG extension.

Tools > Addons > Extensions = disable that AVG extension
If you don't have an AVG extension installed, see this - http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes - there are at least two other extensions that use the "guts" of an AVG extension in their extension.