viruz, why are you redirecting the output from the find command to this exe file?   this is likely why you are getting these corruption messages.   run this instead:

find /mnt/hda1 -mtime -5 >> filestoinvestigate.txt

The >> appends output to a file.  I don't think you need that, but I usually do that to be on the safe side.

You should definitely have more files modified than what you have posted.  Windows modifies dozens of files on every boot.  Try expanding your time window a bit.