Fire fox help please

[Highway61]

I have a Dell and I went to Firefox as it is suppose to speed things up. However, when I click on ANYTHING in the lower left hand corner I see ...."waiting for yieldmanager...then something else then yet another. A whole flood of nonsense, then I get "Fire fox not responding" and down we go. Am I doing something wrong? I am NOT by anymeans an expert...anyone know what I am doing wrong? Thanks

[Egnever]

1. Sounds like you are infected

Have you run any antimalware solutions like malwarebytes? That would be my first step, you can download it here http://www.malwarebytes.org/

[Highway61]

2. scaning right now

also, when I boot up a flag comes up that I am using as the administrator and I should be a "user". I don't know how or when that happened but I don't know how to fix that either

[Egnever]

4. That is odd as well

Windows doesnt care what type of account you are using. I am going to have to assume Malwarebytes found lots of stuff.

[canetoad]

3. First time I've heard of this one

"Why do I keep getting security warning pop-ups about ad.yieldmanager.com?
If you're getting security warning pop-ups alerting you the presence of an infection labeled as ad.yieldmanager.com, your computer may be infected with a trojan. Trojan makers are profit-driven and in order to steal your money and identity, they use trojans to generate fake security warning pop-ups which are designed to list fictitious infections allegedly found on the computer and redirect you to a website where you're tricked into buying a rogue software. "

Lots of information here http://www.spywareremove.com/removeadyieldmanagercom.html