razor-report using excessive amounts of memory

[http://dummy.us.eu.org/robert (robert)]

I'm continually getting this in my procmail log file:

Out of memory!
Callback called exit at /usr/local/bin/razor-report line 15.
END failed--cleanup aborted at /usr/local/bin/razor-report line 50.
Callback called exit at /usr/local/bin/razor-report line 50.
END failed--cleanup aborted at /usr/local/bin/razor-report line 111.
Callback called exit at /usr/local/bin/razor-report line 111.
END failed--cleanup aborted at /usr/local/bin/razor-report line 19.
Callback called exit at /usr/local/bin/razor-report line 19.
END failed--cleanup aborted at /usr/local/bin/razor-report line 19.
Callback called exit at /usr/local/bin/razor-report line 19.
END failed--cleanup aborted at /usr/local/bin/razor-report line 15.
Callback called exit at /usr/local/bin/razor-report line 15.
BEGIN failed--compilation aborted at /usr/local/bin/razor-report line 15.
procmail: Error while writing to "razor-report"

I do this before calling procmail:

ulimit -v 3072

to set the maximum used by any process to 3 meg.  Isn't 3 meg large enough
for razor-report?  I only have limited memory in this computer and
allocating more than 3 meg for a spam-handling process (or mail delivery,
for that matter) seems excessive to me.