For those of you who use Lavasoft's Ad-Aware program, version 1.06 has just been released.
Also, for users of Spybot Search & Destroy, if you want to try out the new release candidate version 1.4, you can go here to give it a whirl.
Spyware Blaster also had an update recently. They are on version 3.4
And, while I'm at it a couple of other favorite computer utilities have had recent updates:
Everest Home is a free utility for hardware diagnostics and memory benchmarking. It's also useful for overclocking.
Regseeker is a free registry cleaner and Windows XP tweaker. I've used this a lot to clean my registry. I'm not certain that my performance is enhanced really, but I'm one to keep clutter to a minimum on my PC.