This issue related to 1292178 and probably 1281907.

It is possible to get nosy emails from consecutive
changes to an issue, that all repeatedly say "New
submission from admin".

Process:
1) Create issue with blank message. Submit.
2)  Modify issue by adding message. Submit.
3) Receive nosy email stating "New Submission"
4) Modify issue by changing a field (no message)
5) Nosy email sent stating "New submission..."

roundupdb.py:

 if authid:
            if len(self.get(nodeid,'messages')) == 1:
                m.append("New submission from
%s%s:"%(authname, authaddr))


I think checking for existence of 1 message is causing
problem, and not checking that issue existed before...

Thanks!