A possiblility, but if /tmp is running out of space then this script is eating
up 10GB of hard drive space when it runs.

> > running ulimit from the shell gives a response of unlimited.  The log files are
> > around 100 - 200MB in size for each day that I'm trying to process (one day's
> 
> Any chance /tmp is running out of space? (its a stretch, but its
> happened to me with the sort command, and I am going to guess that
> sort may be called from the perl script..)