laptop2:/usr/src/mythtv-0.18.1# uname -a
Linux laptop2 2.6.8-2-686 #1 Thu May 19 17:53:30 JST 2005 i686 GNU/Linux
laptop2:/usr/src/mythtv-0.18.1# apt-get  install mythtv-frontend
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:
  mythtv-frontend: Depends: libasound2 (> 1.0.9) but 1.0.8-3 is to be installed
                   Depends: libc6 (>= 2.3.5-1) but 2.3.2.ds1-22 is to be installed
                   Depends: libgcc1 (>= 1:4.0.1) but 1:3.4.3-13 is to be installed
                   Depends: libmyth-0.18.1 but it is not going to be installed
                   Depends: libqt3-mt (>= 3:3.3.4) but it is not installable
                   Depends: libstdc++6 (>= 4.0.1) but 3.4.3-13 is to be installed
                   Depends: libxinerama1 but it is not installable
                   Depends: libxxf86vm1 but it is not installable
E: Broken packages
laptop2:/usr/src/mythtv-0.18.1#