[GeoNetwork-users] "GeoNetwork: Service temporarily unavailable..."

Hi there,

I'm a newbye as GeoNetwork end-user. I install Geonetwork server to on my
Ubuntu Gutsy Gibon to test it anf to learn more about this catalog.
Unfortunately, I'm experiencing some issue at the end of the install
process. I've follewed all the step described to the How2 document for
version 2.1.0 installation and all worked fine but when I try to connect to
the server via the link I get the following message: *"Service Temporarily
Unavailable.* *The server is temporarily uneable to service your request due
to maintenance downtime or capacity problems**. Please try again later"*.
It's sounded to be an Apache 2 issue, but don't know how to work around to
this...

Any idea on how I can fix this issue would be very appreciated.

Thank you