Richard Lynch wrote:

You have users who "double-click" on their submit button.

Deal with it. :-)

Add a token to the form and mark it "used" in the database on first
submit.

As I have indicated - the code SHOULD have delt with it - that is part of the problem :( I just had not anticipated a browser splitting double click into two single clicks :)

But I'm now looking at other ways of flagging the 'second page' so that it knows that it is already being handled. That way I will not need to do so much work everywhere else in the code base. ;)

--
Lester Caine - G8HFL
-----------------------------
L.S.Caine Electronic Services - http://home.lsces.co.uk
Model Engineers Digital Workshop - http://home.lsces.co.uk/ModelEngineersDigitalWorkshop/
Treasurer - Firebird Foundation Inc. - http://www.firebirdsql.org/index.php

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