When I do an apt-get upgrade, I keep getting the below error message. Anybody know a fix for this? I have sid source.list file setup.

Thnx.

Extracting templates from packages: 100%
Preconfiguring packages ...
(Reading database ... 86234 files and directories currently installed.)
Preparing to replace x11-common 6.9.0.dfsg.1-4 (using .../x11-common_6.9.0.dfsg.1-6_all.deb) ...
Unpacking replacement x11-common ...
dpkg: error processing /var/cache/apt/archives/x11-common_6.9.0.dfsg.1-6_all.deb (--unpack):
trying to overwrite `/usr/include/X11', which is also in package libxft-dev
System startup links for /etc/init.d/x11-common already exist.
Setting up X server socket directory /tmp/.X11-unix...done.
Setting up ICE socket directory /tmp/.ICE-unix...done.
Errors were encountered while processing:
/var/cache/apt/archives/x11-common_6.9.0.dfsg.1-6_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

as root do this to correct that broken package:
dpkg -i --force-overwrite /var/cache/apt/archives/x11-common_6.9.0.dfsg.1-6_all.deb

Thnx mos, that fixed it.