How do i get rid of my virus?

Helpful Links Regarding Malware Protection

An excellent link to read is Tom Reed's Mac Malware Guide.

Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.

See these Apple articles:

Mac OS X Snow Leopard and malware detection

OS X Lion- Protect your Mac from malware

OS X Mountain Lion- Protect your Mac from malware

About file quarantine in OS X

If you require anti-virus protection I recommend using VirusBarrier Express 1.1.6 or Dr.Web Light both from the App Store. They're both free, and since they're from the App Store, they won't destabilize the system. (Thank you to Thomas Reed for these recommendations.)

After trying all the links Kappy posted and three different malware spyware scanners (and they did find 9 threats!), I have found the answer. It is in your Extensions. Simply open your extensions and turn it off (mine was listed under a Youtube Video Converter). Problem solved!

Out of curiosity, what extension was causing this behavior? Was it actually named "Youtube Video Converter" or something different? Knowing may help prevent this problem for others.

If that is the proper name, this is new adware that I've never heard of before. (See my Adware Removal Guide.) I'd love to know as much as possible, from both you and Cynander, about this thing. If you could e-mail me privately (see the Contact Me links at the bottom of every page on my site) with a link to whatever you downloaded, that would be great. I'll be able to take a look at it and add it to my guide.

It wasn't actually called that. That was it's function though. I was having an issue with KeepVid and was looking for an alternative. I wish I could recall it, but when I deleted it I didn't make note of what it was called. It was a red icon and I think it started with a W, but really not sure. I checked my search history and I did click on a site called Video Grabber. So maybe that?