Problems upgrading libraries for Fonts

[homega@vlc.servicom.es]

Hi,

I'm trying to install the packages xfonts-cyrillic_3.3.2.3a-11.deb and
xfonts-cjk_3.3.2.3a-11.deb, for which I need xfs and xbase-clients;

xbase-clients_3.3.2.3a-11.deb depends, among others, on xlib6g (>= 3.3.2.3a-2)
(the rest of the dependencies were already installed in the system);

xlib6g_3.3.2.3a-11.deb depends on xfree86-common, libc6 (libc6 is ok, and
xfree86-common... shouldn't it be installed with the basic X installation? it
doesn't show with `dpkg -l' though).  But xlib6g conflicts (and replaces)
xlib6 (<< 3.3.2.3a-8) and xlib6g-dev (<< 3.3.2.3a-2), and replaces xbase
(<< 3.3.2.3a-2) ... a bit too much fiddling with the x-window system?

Now, this is the output of my attempt to install xlib6g:

homega:/tmp# dpkg -i xlib6g_3.3.2.3a-11.deb
dpkg: considering removing xlib6 in favour of xlib6g ...
dpkg: no, cannot remove xlib6 (--auto-deconfigure will help):
 tk42 depends on xlib6 (>= 3.3-0)
  xlib6 is to be removed.
dpkg: regarding xlib6g_3.3.2.3a-11.deb containing xlib6g:
 xlib6g conflicts with xlib6 (<< 3.3.2.3a-8)
  xlib6 (version 3.3.2.2-4) is installed.
dpkg: error processing xlib6g_3.3.2.3a-11.deb (--install):
 conflicting packages - not installing xlib6g
Errors were encountered while processing:
 xlib6g_3.3.2.3a-11.deb

Now, the current system is running hamm, and the installation includes (none
of these, except for xfs, have ever been upgraded):

libc5 5.4.38-1.1;  libc6 2.0.7.19981211;  libc6-dev 2.0.7t-1;
libc6-doc 2.0.7t-1;  tk4.2 4.2p2-7;  tk42 4.2p2-7;  tk8.0 8.0p2-4;
tk8.0-dev 8.0p2-4;  xbase 3.3.2.2-4;  xlib6 3.3.2.2-4;  xlib6g 3.3.2.2-4;
xlib6g-dev 3.3.2.2-4;  xfnt100 3.3.2.2-4;  xfnt75 3.3.2.2-4;
xfntbase 3.3.2.2-4;  xfntbig 3.3.2.2-4;  xfntcyr 3.3.2.2-4;  (these last two
packages I believe will be replaced);  xfntscl 3.3.2.2-4

(Probably I should upgrade more packages from potato, ... how about libc6).

I can't uninstall tk42, I can't remember which packages need it, but I
recall installing it for some reason(s).  Please, could you help me with
this?

TIA

Horacio
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