BUG in package, what to do?

["A. Loonstra" <arnaud@[nospam] sphaero.org>]

Since I do not do this very often a very basic question:

I found a problem with a package. I want it to be fixed since it hasn't 
for days. What do I do???

The package is xfce4 which is uninstallable because of broken packages. 
Since that is all it says I don't nou where to go next.

I found this though but that's only a report.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=212800

Any ideas.

Arnaud.