> All,
>     I have been successfully running MRTG version 2.7.3 for about 2
> months now on Digital Unix. The other night, I started receiving mail
> messages every 5 minutes indicating a problem with the cron job. The
> message read:
> 
> ERROR: I guess another mrtg is running. A lockfile
> (/data/applications/MRTG/mrtg.cfg_l) aged
> 1 seconds is hanging around. If you are sure that no other mrtg
> is running you can remove the lockfile
> 
> There is only one instance of MRTG, it polls only 4 interfaces (all
> local) and when I run mrtg  from the command line it takes about 4
> seconds. The lock file referred to never seems to be there, and data
> appears to be updating.
> 

First the obvious: Did you (or a coworker) change anything ?

Check the cron log to see if the job gets started twice.
Check the crontab file for the same

When you start the file manually, the lock file is there. It goes away
when the job finished so that's okay.
The lockfile is 1 second old, so it really looks if the job gets fired
twice, try (mrtg mrtg.cfg & mrtg mrtg.cfg) for similar failure.

Regards,
Alex

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