I have only seen this happen on Cron messages generated by our apt-cacher. I am running a Debian Lenny machine with: SpamAssassin version 3.2.5 running on Perl version 5.10.0
I am calling spamassassin through amavid-new 2.6.0 I have pastebinned my debug output, I'm not sure what else whould be helpful to include: http://www.pastebin.ca/1089935 -- Munroe Sollog Systems Engineer Digirati Consulting, Inc [EMAIL PROTECTED]