I get this message as well. I also get a similar message from Icedove. Unfortunately, rebooting the system does not seem to clear it up: I still get the message after a fresh reboot, and I'm the only user logged in. "/home" is NFS mounted, but I know I'm not running Iceweasel/Icedove, or even any other Mozilla derivative, from any other system where I use this home-directory.
-- David L. Lambert Software Developer IBM office ph# 517-391-5236 (T/L 596-5236) cell ph# 586-873-8813 member ACM, Lansing JUG, Detroit.pm, etc. IBM Global Business Services IBM Services Center : Lansing 196 Crescent East Lansing, MI 48912