F-Secure Antivirus is a great product that offers many of the standard functions associated with antivirus software, but also goes above and beyond the bar set by others with efforts by F-Secure to educate the people that use F-Secure Antivirus on general security practices as well as specific threats.
F-Secure Antivirus is very easy to use and comes preconfigured with the most effective options for your computers security. The menu's within F-Secure Antivirus are simple and quick to display the options under each of them.
With one of the most thorough antivirus engines available, F-Secure Antivirus provides elite protection against viruses, spyware and many other security threats. The added benefit of the support and education portion of their website adds to the overall feeling of protection while using this product. While it isn't perfect, and does have issues with significant slowdowns while the on-access scanner is working, the overall product is effective.
Note: If darkgain.c is detected then leave it, this is a generic name for keymakers and patches for FSecure. IT IS NOT A VIRUS, if unsure test it otherantivirus like kaspersky, trendmicro etc and check the description on the net. 
