If you think that this file contains a virus or another malware, please download a virus scanner.
If FSAVSD.EXE is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Try to install an antivirus to see if it helps.
If you want to remove FSAVSD.EXE from your computer, just go to Start > Control Panel > Add/Remove programs and select F-Secure Content Scanner Server from the list.
You may try contacting F-Secure Corporation, the developer of FSAVSD.EXE and ask for more information.