Jan Kurella wrote:
  Short Summary:
 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?
 Deactivating pipelining, solved the problem finally. Hope that helps you
 finding the problem. Pipelining should not lead to 30s load of 14kB
 css-files.
 Jan 
Thanks, at least now we know that XWiki (or tomcat?) doesn't work well
with pipelining.
And this touches another problem, CSS files should have a cache policy
so that they aren't transfered for each request.
Sergiu.