> 
> Apparently the problem isn't solvable by using tokens, sessions, 
> locking, and such. So why not just check the dB to see if the current 
> record has already been entered? If so, don't do it again.
> 
> Isn't this a solution? Or is there something here that I'm 
> not understanding?

...or maybe do a 'REPLACE...' rather than an 'INSERT...'?  That way the
record is not entered into the database twice if it already exists.  Might
be a more economical way than doing a "lookup/compare/write if" sequence.

JM

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