Logfile not accessible

I'm monitoring about 8 log files on a system, and on some

of them, I'm getting a "Logfile not accessible" .

I can login to the box as the hobbit user and cat the files out

just fine. The privileges all match up with the other logfiles that are

working just fine. Manually, I can see the files just fine.

How does Hobbit try to read the log files?

I would appreciate any suggestions.

Thanks.James