statusauditor.py does not set the status to unread when
the issue is created using the standard classic
webform. Because the status key si available, it is
just not set. Thus the code should read like:

 def presetunread(db, cl, nodeid, newvalues):
     ''' Make sure the status is set on new issues
     '''
-    if newvalues.has_key('status'):
+        
+    if newvalues.has_key('status') and
newvalues['status']:
         return

     # ok, do it

Attached a patch that improved behaviour for me,too.
It is not intuitive that last comments on issues reset
the status to "chatting". On the other hand, if they
had no status. We can set it to chatting.

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The resolved->chatting behaviour is intentional and will remain the 
default - if someone sends a message to a closed issue, it is assumed 
they wish to reopen it. You're free to modify your local status auditor 
to change the behaviour, as you've done :) 
 
Thanks for the other patch. 

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If it is intentional, why don't you set it to chatting from
"done-cbb" ? :)

My patch also contained that if the status is None it will
be set to chatting if a
msg comes in.

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Your comment about done-cbb makes sense.  
  
As for your other comment, "Thanks for the other patch." :)