anybody help me? dependency problem: no way back???

[Erik Norman <erik.norman@gmx.net>]

I made an upgrade with atp-get after having installed some packages.
I got some dependency problems, so I tried

fzr:/# apt-get check
Reading Package Lists... Done
Building Dependency Tree... Done
You might want to run `apt-get -f install' to correct these.
The following packages have unmet dependencies:
  libc6-dev: Depends: libc6 (= 2.3.2.ds1-20.0.0.1.pure64) but
2.3.2.ds1-20 is installed
E: Unmet dependencies. Try using -f.

fzr:/# apt-get install -f
Reading Package Lists... Done
Building Dependency Tree... Done
Correcting dependencies... Done
The following extra packages will be installed:
  libc6
Suggested packages:
  glibc-doc
The following packages will be upgraded:
  libc6
1 upgraded, 0 newly installed, 0 to remove and 59 not upgraded.
1 not fully installed or removed.
Need to get 0B/4318kB of archives.
After unpacking 0B of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 87507 files and directories currently installed.)
Preparing to replace libc6 2.3.2.ds1-20
(using .../libc6_2.3.2.ds1-20.0.0.1.pure64_amd64.deb) ...
Unpacking replacement libc6 ...
dpkg: error
processing /var/cache/apt/archives/libc6_2.3.2.ds1-20.0.0.1.pure64_amd64.deb (--unpack):
 trying to overwrite `/usr/lib64', which is also in package xmms-kde
Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.3.2.ds1-20.0.0.1.pure64_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


The problem is that I can't remove xmms-kd3, but I can't force any
installation.
HELP!

Erik