A full scan on standard clean test system took 30 minutes when set to Fast priority and closer to 45 at Automatic. The fast mode runs at about the same speed as Webroot AntiVirus with AntiSpyware and Firewall (WAVASF) and noticeably faster than Spyware Doctor with AntiVirus 5.5. By contrast, avast! antivirus 4.8 Home Edition, AVG's main free competitor, scanned the same system in under 10 minutes. Do keep in mind that these figures are intended for relative comparison only. The products will probably work faster on your own system than on the resource-limited virtual machine I use for testing.
The fast mode runs at about the same speed as Webroot AntiVirus with AntiSpyware and Firewall (WAVASF) and noticeably faster than Spyware Doctor with AntiVirus 5.5. By contrast, avast! antivirus 4.8 Home Edition, AVG's main free competitor, scanned the same system in under 10 minutes. Do keep in mind that these figures are intended for relative comparison only. The products will probably work faster on your own system than on the resource-limited virtual machine I use for testing.
That same Resident Shield was quite effective at keeping malware from installing on my clean test system. As soon as I opened a folder containing the samples, the shield started wiping them out. Like avast!, it eliminated just over half the samples on sight. And when I tried AVG Free with hand-modified versions of those shoot-on-sight samples, it still wiped out all but one. I launched each of the samples that survived this initial massacre and noted whether the utility completely prevented installation of any executable files (full credit), tried unsuccessfully to block installation of executable files (half credit), or just plain missed the threat.
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