When I click on Firefox in my tool bar, it opens a yahoo window, what's that about?
I don't know if you call this "being hacked", but when I go to the tool bar and click on Firefox, it open a yahoo window. I trust Firefox much more than I do Yahoo. How do I fix this?
The SpecialSearchOffer 1.1.1 extension that you have installed, even though is is inactive is the likely culprit.
The description of that extension says "Upgrade you browser experience of Firefox and enjoy Yahoo powered search as your default search engine and home/startup page. Browse Yahoo's news, sports, finance and more in just one click. Set Yahoo as your home/startup page and default search on Firefox." I suggest you Remove that extension and see if your issue it retified.
Did you check the settings in "Options/Preferences -> Home" ?