On a daily basis, your computer could get infected by dozens of spyware and Trojans while you're visiting a certain webpage or downloading a file. You can avoid this type of problems by installing an effective anti-spam tool to help you scan and fix all threats from your PC.
For instance, you can try True Sword, a powerful application that accurately scans your system for adware, keyloggers, Trojans, etc. and removes them from your computer.
Before running a scan, I strongly recommend you to configure the program's settings if you know the exact location where the problems occur. Also, the program can perform two types of scans, Express and Deep, and ignore files larger than any indicated size.
Unfortunately, you will probably get the same impression as I had about the scanning speed. It takes a bit too long to scan your computer for threats, regardless the amount of scan filters you select.
In spite of its scanning speed, the application offered me a list containing threats that other similar programs didn't detect, therefore, it's worth waiting a bit longer. As for True Sword's price, I suppose it's quite cheap considering the fact that, by using the application, you can improve your system's performance.