When I'm browsing with Firefox, I often get pop-ups from Internet Explorer. How is this possible?

When I then start Internet Explorer, I get a message that I have arrived on an incorrect homepage.

How do I correct this behavior?

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closed as not a real question by grawity, akira, Sathya Dec 3 '11 at 13:05

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. See the FAQ for guidance on how to improve it.