You might want to check that su hasn't been replaced with a rootkit su.

On Tue, 2002-09-03 at 17:47, Richard Luckhurst wrote:
> Hi list
> 
> I am using Redhat 7.2 for a client and today noticed a problem I've
> not seen before. I went to become root as I always have, with su, 
> and instead of being asked for the root password and becoming root
> I got asked for the password and then got an error about not being able to
> change groups. I have checked that no one has been playing around with
> the group and passwd files and they are untouched as are the permissions
> on /bin/su. Has anyone got any idea why I might now be getting this
> error?
> 
> Thanks a lot 
> 
> Richard
> 
> ____________________________________________________
> 
> Richard Luckhurst
> 
> Manager / Engineer
> Sound Advice
> P.O. Box 104
> Narrabri NSW 2390 Australia
> 
> Ph / Fax +61 2 6792 6060
> 
> -- 
> SLUG - Sydney Linux User's Group - http://slug.org.au/
> More Info: http://lists.slug.org.au/listinfo/slug
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* Hey if you're going to get mad at me every time I do something   *
* stupid, then I guess I'll just have to stop doing stupid things! *
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