>>>Hi everybody,
>>>
>>>Got one more crash and I think I found the reproducible scenario.
>>>
>>>In UT when you have a reference to a thread inside a message click on Open in the new tab (using right click on a link). Switch to this tab to review that message. Now try to go back to your main UT window. I think that's how I got my crashes. Similar crashes I got from gmail, I think.
>>
>>That seems to work OK here. Does this happen if you only have a couple of I tabs open?
>
>I had 3 or 4 tabs opened at that moment and also I was testing ASP.NET application in the same time (different IE instance, of course).

You've mentioned your ASP.NET application being open before.

Does this happen if your ASP.NET application is not open at all?