diff -Naur tmail-0.10.8-orig/lib/tmail/textutils.rb tmail-0.10.8/lib/tmail/textutils.rb

--- tmail-0.10.8-orig/lib/tmail/textutils.rb	2004-02-20 02:35:01 +0200

+++ tmail-0.10.8/lib/tmail/textutils.rb	2009-02-09 16:50:51 +0200

@@ -28,7 +28,7 @@

       t = Time.now

       sprintf('%x%x_%x%x%d%x',

               t.to_i, t.tv_usec,

-              $$, Thread.current.id, @@uniq, rand(255))

+              $$, Thread.current.object_id, @@uniq, rand(255))

     end

     aspecial     = '()<>[]:;.@\\,"'