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always getting java script application error

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just downloaded firefox 7 - constantly get this message - Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function

just downloaded firefox 7 - constantly get this message - Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function

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This issue can be caused by the McAfee Site Advisor extension

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

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As stated above it is a McAfee issue.

Here is an additional thread that might assist you with this as well

https://support.mozilla.com/en-US/questions/868760