[ubuntu] wont allow me to remove

hello

im just trying to remove the mongodb but it says a broken pipes even i remove it by purge is there any way to get rid of this? thanks

root@fblinuxserver:~# sudo dpkg -l | grep mongo
ii mongodb-clients 1:2.0.4-1ubuntu2.1 object/document-oriented database (client apps)
ii mongodb-server 1:2.0.4-1ubuntu2.1 object/document-oriented database (server package)

root@fblinuxserver:~# apt-get --purge remove mongodb-clients
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
mongodb-10gen
The following packages will be REMOVED:
mongodb-clients* mongodb-server*
The following NEW packages will be installed:
mongodb-10gen
0 upgraded, 1 newly installed, 2 to remove and 5 not upgraded.
Need to get 0 B/87.4 MB of archives.
After this operation, 171 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 213719 files and directories currently installed.)
Unpacking mongodb-10gen (from .../mongodb-10gen_2.4.14_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/mongodb-10gen_2.4.14_i386.deb (--unpack):
trying to overwrite '/usr/bin/mongo', which is also in package mongodb-clients 1:2.0.4-1ubuntu2.1
No apport report written because MaxReports is reached already
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/mongodb-10gen_2.4.14_i386.deb
E: Sub-process /usr/bin/dpkg retued an error code (1)