Linux Java + svn commit issue

Damn,

1)
I had to change the mainboard of my desktop pc and need to install debian completely new. But than java always crashes.

2)
After a while of investigation, i decided to use a loacl VM with java.
lubuntu, xubuntu and my old 64bit XP had the same Java crash issue.
But, on a Kubuntu 12.04 the java runs well.
It seems to be perfect; running the new Eclipse Juno.
svn co .. on my project.

3)
.. but know i am not able to do a svn commit
and don't find anything that helps.

HOST: svn commit -m "test"
svn: Übertragen schlug fehl (Details folgen):
svn: Authorization failed

mhh,
.subversion/auth/svn.simple
does not contain any password information.
where the hell is the password stored ...