I installed Eucalyptus front end components (from binary packages) on Opensuse 11.3. On another Opensuse 11.3 machine (running Xen) I installed the node controller. I could log into the web interface at the front end, configured things in the admin account and also created another account.
However after rebooting the front end, the web interface is broken. All the Eucalyptus services are running, apache is running, the ports are open. Yet instead of the login screen I used to get, now I get a list of 4 directories:

Directory: /
META-INF/ 4096 bytes Mar 9, 2011 4:53:19 PM
WEB-INF/ 4096 bytes Mar 9, 2011 4:53:19 PM
extensions/ 4096 bytes Mar 1, 2011 6:33:52 PM
themes/ 4096 bytes Mar 1, 2011 6:33:52 PM

There is no content, only few empty subdirectories.
How is that possible, I only rebooted the front end. I restart the cc and cloud controller many times and they are restarted without any error. I rebooted the front end machine a million times, and I always get the same error.
I am truly lost, any suggestion on what may cause this error and how to solve it?
Thanks!