Anyone know how to fix the following dependency problem?

debianx:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer
required:
libssh2-0 libmpeg3-1 libntfs-3g10
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
libmpich1.0ldbl
Suggested packages:
mpich-bin
The following NEW packages will be installed:
libmpich1.0ldbl
0 upgraded, 1 newly installed, 0 to remove and 20 not upgraded.
3 not fully installed or removed.
Need to get 0B/635kB of archives.
After unpacking 1876kB of additional disk space will be used.
Do you want to continue [Y/n]? Y
(Reading database ... 209320 files and directories currently
installed.)

THE PROBLEM APPEARS TO START HERE...

Unpacking libmpich1.0ldbl (from .../
libmpich1.0ldbl_1.2.7-3.1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/
libmpich1.0ldbl_1.2.7-3.1_i386.deb (--unpack):
trying to overwrite `/usr/lib/mpich/lib/shared/libfmpich.so.1.0',
which is also in package libmpich1.0c2
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/libmpich1.0ldbl_1.2.7-3.1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


Thanks
J.