[.apt-get] Error intentando upgradear

[Juanjo Espi <juanjoespi@wanadoo.es>]

apt-get me da el siguiente error... Alguien me puede orientar?

debian:/home/juanjo# apt-get upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
1 packages upgraded, 0 newly installed, 0 to remove and 0  not upgraded.
88 packages not fully installed or removed.
Need to get 0B/602kB of archives. After unpacking 4096B will be used.
Do you want to continue? [Y/n] 
(Reading database ... 49417 files and directories currently installed.)
Preparing to replace xutils 4.1.0-16 (using 
.../xutils_4.1.0-16woody1_i386.deb) ...
Unpacking replacement xutils ...
dpkg: error processing /var/cache/apt/archives/xutils_4.1.0-16woody1_i386.deb 
(--unpack):
 trying to overwrite `/usr/X11R6/bin/atobm', which is also in package 
xbase-clients
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/xutils_4.1.0-16woody1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Gracias,
Juanjo.