None of the reasons (malware defense software) you state are 'solid'.
Try Bitdefender, Trend Micro, Panda ...
Indeed, this could be some yet unknown ad-ware, spyware or other malware, this software might find it for you. Did you try cleaning temp-files, cookies, history ? Did you try another browser ?
Also, check the dhcp/dns configuration for this pc instead of relying on some vague url/redirect theory. This can be done with a hacked proxy too, but then again, this is a really of-scale.
None of the reasons (malware defense software) you state are 'solid'.
Try Bitdefender, Trend Micro, Panda ...
Indeed, this could be some yet unknown ad-ware, spyware or other malware, this software might find it for you. Did you try cleaning temp-files, cookies, history ? Did you try another browser ?
Also, check the dhcp/dns configuration for this pc instead of relying on some vague url/redirect theory. This can be done with a hacked proxy too, but then again, this is a really of-scale.
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