(And for those with Macs, feel free to leave a comment razzing us PC users. :-P)
Here's a good checklist for those looking to speed things up or test their virus protection.
To remove infections of Trojans, Spyware, Adware, Worms, Keyloggers, Rootkits, Dialers and other malicious programs A-Squared has a free program.
This one is my favorite. CCleaner removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history.
Ad-Aware 2007 free anti-spyware version provides you with advanced protection against spyware that secretly attaches and takes control of your computer, resulting in aggressive advertising pop-ups, sluggish computer activity, even identity theft through stolen bank details, passwords, and credit card account numbers.
AVG Anti-Virus Free Edition is one of the most popular solutions to provide basic security protection on home and non-commercial PCs.
So there you have it! Hope someone benefits from them like I did.