Suddenly spam is appearing in Y!A text boxes?

This morning the following spam link is being added to any 'answer', 'ask a question' or 'report' box that I open on Y!A. This is with the Chrome browser only; it doesn't happen in Firefox. <a href=http://download.cnet.com/Free-Youtube-Downloader-Pro/3000-2071_4-75329731.html... show more This morning the following spam link is being added to any 'answer', 'ask a question' or 'report' box that I open on Y!A. This is with the Chrome browser only; it doesn't happen in Firefox.

<a href=http://download.cnet.com/Free-Youtu... >youtube downloader</a>

I'm also being redirected to various spam sites when I click on Google search results.
I know this is some sort of malware that has attached itself to Chrome, but neither Avast or AdAware are finding any problems.
Is anyone familiar with this problem, and do you have any ideas on removing the malware?
Update: For some reason, I can't copy/paste the link. Since it's pasted itself into this 'Additional details' box, I'll leave it so the entire link is visible.


<a href=http://download.cnet.com/Free-Youtu... >youtube downloader</a>
Update 2: Thanks for the suggestion, Yahzmin, but that didn't work. Anyone else have an idea about this?
3 answers 3