To Charles:
It takes forever(=minutes) to load a long thread and usually he has to stop loading, because nothing happening. When he does this, the page opens incomplete.

By reloading many times he sometimes gets the complete page.

That's very odd. You noted in your first post that the user has tried other browsers, and the problem only exists in IE6. What other browsers were tested?

definately odd, have you had any other users experiancing the issue mentioned?

Do you ever see superfluous scroll bars oon the screen after posting a reply?

Well, he's using now Opera 7.23 and has still same problems. So it's propably not a browser issue at all. Fortunately seems like the problem is not common. We made a gallup and no one else complained. I think we won't spend more time on this for awhile. Thanks for help anyway!

The nature of the problem does make it sound like a connection issue rather than something related to the UBB.

Well, seems like similar problems exists with other people after all. Quick question: Does using proxy server have any effect on page (not-)loading?

Possibly, depending on the proxy server.

Web-mangling "utilities" such as Norton Internet Security can also cause problems.