>During the past several weeks I have been having problems using UT. It looks like on every second click (every other message I want to read) it takes very long to get the message. Sometimes when I post a message (and I don't post many) it takes several times until the message goes to the board. I use FireFox 3.16.13. Is this an issue with Firefox or UT?
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>UPDATE. While posting this message, I clicked on Send. The browser says Done but the message is still in the state when it was not posted (I see command buttons Send and Preview at the bottom).

Here are your stats for the last hour. As you can see, it is difficult to get it any faster. So, you may want to make some tests from a different route, another PC, another browser. But, there is definitely something remote that is causing all this.

See the attached image.