I don't know what's "cydoor" It all happen when my internet gone crazy, I thought it was just the server's problem but it's been many days. (I connect to the internet but whenever I go to a website it says cannot find server?) I took a virus scan with norton but no virus found, and then I took a sypbot s & D scan and found a spyware/adware(dunno), "cydoor". I remove it and my internte problems are over. But then again, at the next day, when I took a scan again, my comp is infected by "cydoor" again. Can I ask something, why am I keep being infected? I mean..I have spyware blaster and spybot s & d and SG install, and I already immunize in spybot s & d, my comp can't be infected again, right?.. Next question, what is "cydoor"? what does it do?