I did the search already, but I'm not sure. Last Wednesday, July 13-14, 2011, my emails accounts; AOL and Gmail have been sending out mass emails at night (4:00 AM) to everyone in my contact list. I wouldn't have known about it if I didn't got some failure notices from contacts that have been de-activated. Nothing appears in the sent folder. I have run a complete scan from McAfee (my firewall and antivirus)and didn't found nothing. Also, I have Firewall and Virus protection from Windows Security Center. I have XP Professional 2002, service pack 3.
Do I have to close the emails accounts or change the passwords only? What to do?