Magento

Hi everyone,

I really need some advice and help.  I’ve been noticing that for the past few days, when I visit our site, my browser at times redirects to mystreamvideo.rr.nu/2f/.  I thought this might be some virus or something on my Mac but I don’t think it is.  We’re running magenta 1.6.0.  It doesn’t happen all the time but maybe once out of 8 times it re-directs to this site.  Anybody have an idea how to get rid of this?  Thank you.