monodevelop install problem

[Pascal Bonesh <firms@tiscali.ch>]

Hi,

I am quite new to debian and especially apt-get. I would like to install
monodevelop to play around a bit.

I do:
# apt-get install monodevelop

which gives me:
Reading Package Lists... Done
Building Dependency Tree... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  monodevelop: Depends: libgtksourceview-cil (>= 0.3) but it is not
going to be installed
               Depends: libgtksourceview-cil (< 0.4) but it is not going
to be installed
E: Broken packages



I seem unable to get libgtksourceview-cil. My sources.list looks like
this:

deb http://security.debian.org/ stable/updates main contrib 
deb ftp://ftp.skynet.be/debian/ sarge main contrib non-free 

deb http://vemod.net/ ./

deb http://pkg-mono.alioth.debian.org/current ./
deb-src http://pkg-mono.alioth.debian.org/current ./

deb http://www.debianplanet.org/mono unstable main
deb-src http://www.debianplanet.org/mono unstable main



I tried various times to go to apt-get.org and I did search for mono
which gives me about the above sources. But nevertheless I seem unable
to get it installed.

-Is there a good source where all necessary packages are hosted? 
-Do I have something installed which prevents me from getting the
desired packages / conflict with them?
-Which is the easiest way to install all of mono with a nice GUI
programming interface?

Thanks in advance,
Pascal