Sygate reports wuauclt.exe hijacking

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Over the course of ten minutes, Sygate reported that "Application Hijacking has been detected" - C:\\WINDOWS\\system32\\wuauclt.exe was trying to launch firefox.exe "to go to the following remote hosts", all of which are legitimate, and all of which were loading from a saved firefox session: resources.zagat.com ssl-hints.netflame.cc

I closed firefox, relaunched it, and the reports of hijack attemps stopped.

I checked to make sure that uwauclt.exe was in the windows/system32 folder (it is) as one sign that this microsoft updater may be a virus is that it is located in another folder.

I scanned my system with avast, superantispyware and malwarebytes and no trojans, viruses, or infected files were found.

I've used Sygate for months and this is the first time this has happened.

Can someone tell me what's going on?

Thanks for any help.

Ellen