It is a common fact that most scanners are only 30% accurate in finding and destroying viruses. So if you are using a single virus program then you are only under the deception that your PC is safe from all hazards. In such a situation it is required that you should go in for scanning through multiple online scanners.
There are online scanners now available from ESET, Bitdefender and Kaspersky which are quite adept at catching certain type of infections.
But there is a problem with online scanners especially if you are using a slow internet connection. The program needs to install proprietary ActiveX control in your browser ( Bit defender ) and also download scanner engine and virus definitions which may be painstakingly slow so only those who have connection speeds in MBPS may go for this kind of infectin removal.
Best of luck maintaining your computer and happy blogging.