@Cool_xxx ... yes, you may well be infected if you do not use antivirus.
You should install a good free antivirus like one of these .....
AVG >
http://free.grisoft.com/doc/1
Avast >
http://www.avast.com/eng/avast_4_home.html
Antivir >
http://www.free-av.com/antivirus/allinonen.html
**Comodo >
http://www.antivirus.comodo.com/ [AV has been in beta only for many months]
**Footnote >> Comodo also has other free tools such as a firewall and anti spam.
After you have installed antivirus pease post a FULL log with all the headers.
OJ