Safari: 27 min for loading Web page (JavaScript issue)

I have Safari running on Mac OS 10.7.1 (MacBook Pro). It works fine, except for some Web pages. For example, <http://www.heise.de/newsticker/meldung/Erster-Kratzer-fuer-Kryptoalgorithmus-AES -1324532.html> gets loaded partly, then it takes minutes to have it completely on my screen (even the text).
In order to depict it, I started the Web inspector and put a screenshot of it for download.
As you can see, there are some JavaScript parts that gets interpreted as streams. This is what causes Safari to show a high latancy, up to 7 minutes. The whole page mentioned above took 27.1 minutes to load. The actual problem is that some parts that apparently are required to complete the page are loaded after some latency.
Switching off Safari Extensions, clearing the cache, and temporarily removing files in "/Library/Internet Plug-Ins" and "~/Library/Internet Plug-Ins" did not show any effect.
On the other side, Firefox 6 (on the same machine) does not have this issue. Its web console complains about "illegal characters", but the page gets completely loaded within fractions of a second.
Any ideas?

The issue has been solved in the meanwhile. The problem was that I had NetBarrier X5 running in the background with Banners Filter switched on. Obviously this caused the massive delay in loading some Web pages with ads in it.

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Safari: 27 min for loading Web page (JavaScript issue)

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