I set my Outpost Firewall to content-block "newsticker.shortnews.de" - Crude but effective!
If nothing better, you could try the HOSTS file to block it
I found the same thing, caused a considerable slowdown.
It MAY be the Java Engine - the IBM version is supposed to be a more optimized compile than SUN's, and a lot more up to date than the Microsoft one I'm using with IE.