apt-get update
Get: 1 http://ftp.us.debian.org unstable Release.gpg [189B]
Get: 2 http://ftp.us.debian.org experimental Release.gpg [189B]
Hit http://ftp.us.debian.org unstable Release
Hit http://ftp.us.debian.org experimental Release
Hit http://ftp.us.debian.org unstable/main Packages/DiffIndex
Hit http://ftp.us.debian.org unstable/contrib Packages/DiffIndex
Hit http://ftp.us.debian.org unstable/non-free Packages/DiffIndex
Hit http://ftp.us.debian.org experimental/main Packages/DiffIndex
Hit http://ftp.us.debian.org experimental/contrib Packages/DiffIndex
Hit http://ftp.us.debian.org experimental/non-free Packages/DiffIndex
Ign 2006-08-12-1302.00.pdiff
Get: 3  [184kB]
Fetched 184kB in 13s (13.7kB/s)
Reading package lists... Done
jindal:/etc/apt# apt-get install libqt4-dev
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.
  libqt4-dev: Depends: xlibmesa-gl-dev but it is not going to be installedor
                       libgl-dev
              Depends: libglu1-xorg-dev but it is not going to be installedor
                       libglu1-mesa-dev but it is not going to be installedor
                       libglu-dev
E: Broken packages