Description of problem:

Connecting to a multi-homed nfs server through a firewall causes this to hang. 
Adding the -l option to df causes it to only check local filesystems.

Version-Release number of selected component (if applicable):

Logwatch 5.2.2 (released 06/23/04)

How reproducible:

100%

Steps to Reproduce:
1. Connect to multi-homed nfs server
2. Hide behind a nat
3. logwatch runs.
  
Actual results:

zz-disk_space hangs

Expected results:

Timeout, failure, or cease checking remote filesystems.

Additional info:

Have a nice day!  The file is located here on my system:
/etc/log.d/scripts/services/zz-disk_space

I put it at low severity, since nfs through nat to multi-homed systems doesn't
work to begin with.  The problem is once you enter that configuration, the
logwatch processes will stack up as they hang.