Go into Firefox and make sure scriptscan & SiteAdvisor add-ons are enabled under Tools - Add-ons. That's probably what it was trying to fix. Firefox disables Siteadvisor and it's components by default.
Hi Ex Brit,
Many thanks for the tip. Works OK now. Site Advisor isactivated in the plugins and extensions, but I don't see Scriptscan in my list of Firefox plugins or extensions. Maybe that was the "necessary action in Firefox" it wanted to perform.
I notice inthe Firefox online help that quite a few Firefox-McAfee users were having similar problems – maybe there should be some browser-specific help incorporated in the McAfee Help menu item.
Maybe there should be. although it would have to changed so often with the rapid-fire update policy that Mozilla has with Firefox that might not be possible.
Anyway, glad it's OK now.