>It is certainly not one second delay issue. When it gets slow it may take couple minutes just to open welcome (or any other) screen completely, i.e. couple times I had time to wait and check how much time would be needed. In other cases, I just close it and come back later.

You get that on other pages on the site? The welcome page you are referring to, is that the http://www.levelextreme.com page? If you get that there as well, then there is definitely something causing us trouble on the Internet DNS structure.