After a few seconds after sending the start request to Jenkins.

In my log file:
Running from: /usr/share/jenkins/jenkins.war
Feb 22, 2012 10:32:47 PM winstone.Logger logInternal
SEVERE: Container startup failed
java.lang.NullPointerException
at winstone.Launcher.shutdown(Launcher.java:333)
at winstone.Launcher.<init>(Launcher.java:199)
at winstone.Launcher.main(Launcher.java:384)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at Main._main(Main.java:273)
at Main.main(Main.java:98)

I have tried to make a fresh install of Jenkins, but with same result.