>>I do not know, what software blocks popups on my computer. I configured true block (put universalthread and level-extreme in the list of allowed sites), but I still can not use Search by ID feature, because I see nothing :(
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>Can you force a refresh of that page and see if that helps? I need to make sure you are reading from the server and not from the cache.

I hit F5. I have the same problem with the regular search as well (or if I want to send message to a member). This little button doesn't open a new popup window for me. I guess, I have some popup blocker besides true block, but I do not know how to find it...