[kubuntu] Firefox Installation Help

I am having trouble installing Firefox. I tried it both through the terminal and the package manager and I get a similar error.


The following NEW packages will be installed:
firefox
0 upgraded, 1 newly installed, 0 to remove and 393 not upgraded.
1 not fully installed or removed.
Need to get 0 B/24.5 MB of archives.
After this operation, 51.3 MB of additional disk space will be used.
(Reading database ... 104548 files and directories currently installed.)
Unpacking firefox (from .../firefox_20.0+build1-0ubuntu0.12.10.3_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/firefox_20.0+build1-0ubuntu0.12.10.3_i386.deb (--unpack):
trying to overwrite '/usr/share/applications/firefox.desktop', which is also in package kubuntu-firefox-installer 12.04ubuntu1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/firefox_20.0+build1-0ubuntu0.12.10.3_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


I had kubuntu before, this is my third time actually installing it, and never had this problem. Why is it having this problem?
If needed I installed it from a flash drive. I could reinstall if needed.

Thanks for any help in advance.