PC Tools, vendor of the popular ThreatFire antivirus software, has released some interesting information about what ThreatFire has found on Vista machines.  It turns out that about 3/4 of the Vista machines running ThreatFire were infected with adware or trojans.  No matter what Microsoft wants you to believe, Vista is susceptible to the same malicious software that XP is.  Even though you're running the latest, "greatest" product from Microsoft that has all those new security features, run antivirus and antimalware programs regularly.