problems installing subversion

[Albert]

I am trying to install subversion in kubuntu and I run into this (see below). 
The problem is the packages cannot be found. How can one change the url from 
which the packages are donwloaded? Or is this another kind of problem? The 
same occurs when using kynaptic.

Thanks for any help

Albert

albert at ubuntu:~$ sudo apt-get install subversion --fix-missing
Reading package lists... Done
Building dependency tree... Done
The following extra packages will be installed:
  libapr0 libsvn0
Suggested packages:
  subversion-tools
The following NEW packages will be installed:
  libapr0 libsvn0 subversion
0 upgraded, 3 newly installed, 0 to remove and 44 not upgraded.
Need to get 134kB/1570kB of archives.
After unpacking 5075kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Err http://security.ubuntu.com hoary-security/main libapr0 2.0.53-5ubuntu5.1
  404 Not Found [IP: 82.211.81.182 80]
Failed to fetch 
http://security.ubuntu.com/ubuntu/pool/main/a/apache2/libapr0_2.0.53-5ubuntu5.1_powerpc.deb  
404 Not Found [IP: 82.211.81.182 80]