Pages take ~30 seconds to load when enabling pipelining in fasterfox

Don't know the exact cause for this, but Jan Kurella reported on the mailing lists that it takes a very long time for the page to load when using Fasterfox:

Problem: Browser took over 30 seconds to load almost every page. Sometimes only few pages took that time - not possible to find any pattern.
Precisely: loading of some css-files took 30 seconds to load

Solution: Browser Firefox with Plugin Fasterfox. All Settings above "Moderat" that means, "optimized" and "Turbo" caused that problem.

Going Deeper in the settings it means, that the Option
Pipelining>Activate Pipelining caused the problem. Can't see why pipelining slowing down the J2EE-Server to timeout - but who knows?