[Jetty-support] Umlaut problem

[Johannes D. <joh...@jo...>]

Hello,
our application running on Jetty 6 has a problem with umlauts.
It runs perfectely for a while, but after some random time, usually a  
couple
of days, umlauts and other special characters are displayed as two  
question
marks.
We are using UTF-8 encoding in our application.
Restarting the server fixes this problem, but only for so long.

Anyone know, how to permanently fix this problem?