Antispyware – 3 (Spyware Doctor)

Spyware Doctor is a good proprietary antispyware. It has got real-time protection, registry clean-up and all. Its spyware definition updates are usually around 4.5 MB and most updates also accompany an update of the scan engine. Its problem is speed and CPU usage. The usual memory usage recorded in task manager for its process is about 80 MB. It slows down the pc to a great extent and if allowed to run at start-up, it lengthens the start-up time too much. On a typical 3 GHz system, it slowed down the start-up time by about 2 minutes. I would not recommend it especially when same performance can be obtained using free tools using much low memory and CPU.