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i get annoying pop-ups"javascript application, exc in ev handl: OSAPIg.oRoot.log is not in function". Please how can I remove them.

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Hello, i get extremely annoying pop-ups: "Javascript application, exc in ev handl: OSAPIg/oRoot.log is not a function."

I already upgraded but after two days it's back. Please help. I don't want to go back to Explorer.

Hello, i get extremely annoying pop-ups: "Javascript application, exc in ev handl: OSAPIg/oRoot.log is not a function." I already upgraded but after two days it's back. Please help. I don't want to go back to Explorer.

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This issue can be caused by the McAfee Site Advisor extension

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Start Firefox in Safe 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).