I got nod32 on a machine that had winfixer and some other junk. It seemed to clean it up, but it still kept coming up with the prompt about blocking the IP from going to some winfixer site. I tried a couple things like spysweerp and adaware, no luck. What else would do it? I tried some winfixer cleaning tool and it seemed ok, but still wouldn't wipe that darn thing from going to the net.
Please download ESET SysInspector, run it, create a log and send it to samples[at]eset.com with this thread's url in the subject.