>>I'm trying to respond to Vladimir Zhuravlev. My first message went fine, but I tried to send another four or 5 times already and it is still in the "Send" state, though I pressed Send button multiple times. No error is displayed. I sent it by e-mail just in case, but what happened with my Private messages?
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>I don't understand what you mean by "Send" state. Is it that the Save was done but the browser never completed the request to the server?

I was pressing Send button several times that day, but the message was never sent and remained as waiting to be sent. So finally I sent an e-mail instead.