goodroi - 2:55 am on Feb 1, 2012 (gmt 0)
Having URL redirection websites in your referral data is not necessarily bad. Have you logged into Google Webmaster Central to see if there are any messages? If you think a virus might have impacted your website then you should check to make sure Google does not think your site has been hacked.
It is very interesting that you have lost traffic from all search engines. I would suggest you revisit and check a second time for technical problem with your website.