>>which were adressed to me (that's why I can find these easily). There is 1 sec between them.
>>But, possibly Sergey can account for them.
>
>Assuming a fast double click, immediately at the first save time, could create such a situation as the message is being sent twice in the same second thus being processed in parallel. I'll see if that could be handled.
>
>>You mean what message ? Something like "You have already submitted this message". I got it after Preview (once) and Send (once). Never saw it before and my message WAS in UT indeed (like if Preview had done it).
>
>Can you send me the content of the message you were trying to create?

I'd noticed this too, see also (2 seconds apart)
http://www.levelextreme.com/wconnect/wc.dll?FournierTransformation~2,15,700301
http://www.levelextreme.com/wconnect/wc.dll?FournierTransformation~2,15,700302