marius@mariusPC:~$ sudo apt-get install libcnbj-2.5 bjfilter-2.5 pstocanonbj
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Suggested packages:
  bjfilter-2.2 bjfilter-2.4
The following NEW packages will be installed:
  libcnbj-2.5 pstocanonbj
The following packages will be upgraded:
  bjfilter-2.5
1 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 179kB/6175kB of archives.
After unpacking 11.1MB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  bjfilter-2.5 libcnbj-2.5 pstocanonbj
Install these packages without verification [y/N]? y
Get:1 http://mambo.kuhp.kyoto-u.ac.jp ./ bjfilter-2.5 1-1 [179kB]
Fetched 179kB in 12s (14.3kB/s)                                                
(Reading database ... 141478 files and directories currently installed.)
Preparing to replace bjfilter-2.5 1-1 (using .../bjfilter-2.5_1-1_i386.deb) ...
Unpacking replacement bjfilter-2.5 ...
Unpacking libcnbj-2.5 (from .../libcnbj-2.5_0-1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/libcnbj-2.5_0-1_i386.deb (--unpack):
 trying to overwrite `/usr/lib/bjlib/bjfilterpixmaip1000.conf', which is also in package bjfilter-pixmaip1000
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Unpacking pstocanonbj (from .../pstocanonbj_3.3-1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/pstocanonbj_3.3-1_i386.deb (--unpack):
 trying to overwrite `/usr/lib/cups/filter/pstocanonbj', which is also in package bjfilter-common
 * Restarting Common Unix Printing System: cupsd                         [ OK ] 
Errors were encountered while processing:
 /var/cache/apt/archives/libcnbj-2.5_0-1_i386.deb
 /var/cache/apt/archives/pstocanonbj_3.3-1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)