Oddly numbered error message received while using GMail

Subject: Oddly numbered error message received while using GMail
From: AppleCPM <a2@wilserv.com>
Date: Mon, 6 Apr 2009 06:00:12 -0700 (PDT)
Complaints-to: groups-abuse@google.com
Injection-info: v15g2000yqn.googlegroups.com; posting-host=71.125.136.117; posting-account=aN3jDwoAAADOaceeGr1YEBdfnBNNGc10
Newsgroups: comp.sys.apple2
Organization: http://groups.google.com
User-agent: G2/1.0
Xref: g2news2.google.com comp.sys.apple2:10054

Hi, y'all!

    Message text: "Oops... the system was unable to perform your
operation (error code 6502).  Please try again in a few seconds."

Willi