Package installation problems after `apt-get update' (was: Handling apt-get, apt-cdrom, sources.list, cdroms.list)

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Hi all.

In order to install the kmobiletools package, which is not present
in the stable repository, I added to my sources.list the following lines:

 deb http://http.us.debian.org/debian testing main contrib non-free
 deb-src http://http.us.debian.org/debian unstable main contrib non-free

, then did

 # apt-get update
 # apt-get install kmobiletools

, but the output was:

 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:
   kmobiletools: Depends: kdelibs4c2a (>= 4:3.5.2-1) but it is not going to be installed
                 Depends: libqt3-mt (>= 3:3.3.6) but it is not going to be installed
                 Depends: libxinerama1 but it is not going to be installed
 E: Broken packages



. I'm quite lost here, any suggestion?
Thanks,
Rodolfo