Does anyone have specific knowledge of a Windows virus that
modifies/eliminates the association of image files on Windows?
I am helping in the administration of a Windows network and I am
getting many complaints from a certain group of users claiming
that they are not able to open .JPG files anymore (they all use
to be able to open them without problems). Their Windows system
(Win95) does not recognize the format and does not associate it
with any programs. If I take the file to another PC on the same
network (but in another group of users) it opens without
problems.  Since the complaints are coming from one group of
users I was thinking that maybe they have been infected, through
an email message addressed to the group, by some virus that got
away from our antivirus software (NAV).  By the way, I have
tried to force file associations on these Windows PCs, and I
still can not open these image files.