Ken Paul says:
 
>I know that this is the HP3000 list but I also know that there is a lot of
>great knowledge on this list so I thought I would start here.
>
>On my HP Vectra 486/66N using MS-DOS 6.22, I have been using the
>DEFRAG utility that comes with DOS and have been experiencing
>random corruption problems with EXEs and DLLs as well as other
>files.  I believe that these problems are directly related to the DEFRAG
>utility but MS doesn't believe that there is any problem with DEFRAG.
>
*Unless there is a problem with your HP Vectra, this sounds like a typical
*virus. DEFRAG is clean for me on my DELL 486/50.
>There advice is to find someone who is using DOS 6.22 and DEFRAG
>who is not having problems and get a copy of theirs.  They also think
>I may have a virus but the MS-Anti-Virus software says I have none.
>Their third possibility is that there may be a hardware problem with
>the Vectra.  I have run SCANDISK on the hard drive which has found
>no problems.
*I also experienced the nasty NYB virus, harmless for files but tricky to
*get rid of. It appears that the one you may have is more destructive.
*Try the Norton Anti-Virus program but make sure you get the latest update.
*You may need to call their tech support line (free for first 30 days (or so)).
>
>I have several examples now of files which have become corrupted
>and I have put a good version and the bad version on the HP3000
>and done some analysis.  In one case a portion of the EXE was
>written in two different places of the file.  Another file contained
>directory information.
>
>I have a checksum program on the PC which I run against the files
>which definitely tells me that they are different.
>
>So, my questions to the group:
>
>1)  Does anyone use DEFRAG under DOS 6.22 who has not
>     seen a possible corruption problem? *see above*
>
>2)  Are there any good Anti-Virus programs out there that
>     someone could recommend? *try Norton*
>
>3)  Is there something flaky about the HP Vectra 486/66N that
>     I should be aware of?  (Why does the hard disk light flash
>     for a few seconds when I'm not doing anything?)
*Virus activity? Not likely a hardware problem.
>
>4)  Is there any place else I should be looking?
*You may wish to follow up with Norton to get their latest list of viruses
*along with an update to get rid of them. There are new viruses being
*added almost daily.
>
>Thanks for your time.  I would really like to solve this problem
>so I don't have to keep reloading software on my PC.
>
>I apologize to those people who think that this is a waste of
>bandwidth on the HP3000-L.
>
>Thanks,
>
>Ken Paul
>
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