Internet Security False "password Protected"

Hello,

I purchased and installed Antivirus 2009 2-3 weeks ago. While doing a scan the program would find 3 files that are password protected correctly.

Since I liked what I saw, yesterday I purchased and installed a license for Internet Security 2009. During the first scan the program found a very large number of "password" protected files. The number of pages in the log is 129 listing all these allegedly password protected files which are not.

Is this a known problem? Is there a solution?

Your response will be greatly appreciated.

PS: The Internet Security also found 4 files infected that the Antivirus did not throughout many scans. I am beginning to wonder what is going on and why the difference, but I'll keep monitoring this to see what happens.