[SIZE="6"]Ad-Aware: Keep your definitions up-to-date[/SIZE]
To fight off spyware and adware successfully, you want to make sure you're dealing with fresh, reliable intelligence from the field. In the same way antivirus software benefits from having the latest virus definitions, Ad-Aware will do a better job if it's running with the latest definition file.
Usually, Ad-Aware will prompt you to check for updates every time you run it, but if you aren't getting that friendly reminder, make sure to check manually by clicking Check for updates now, just above the Start button.
You can also click the gear-shaped Settings button, then the General button on the left, and from there you can set the time at which definitions will be considered out of date to less than 14 days.