Nadya,

>
> I hope you would be able to resolve this problem and let us know the results.
>

I'll watch what happens today and definitely will keep You informed (or come up with more questions).

>
> There is just one very interesting point, you made. How can the changes made
> by one user be seen immediatelly by all other users? How this problem is
> generally solved for different types of database and user interfaces?
>

Exactely, and that is what bothers me most. In my current case this is a company internal
application and for me and my colleques it's no problem to stop and restart the mailing service.
However what, if this were a customer-application. We might be in real trouble.