@mag, thanks for the suggestions. No, “scan all files” is not checked. Also, .txt files are mentioned in the exclusion list but the program still scans them. I haven’t tried the re-installation yet because I want some easy way out of this. By re-installing I will lose all the virus database updates and I will have to download those again.
@Tech, thanks for replying. Its not just a single file. Every file on my computer is scanned on access whether it be a text file or image,sound or video file, files which have nothing to do with viruses. It is really strange.