dpkg errors in kdelibs-data

[Donatas Glodenis]

after trying to update kdelibs-data package from the ubuntu repository I get 
this error message: 

===================
Unpacking replacement kdelibs-data ...
dpkg: error 
processing /var/cache/apt/archives/kdelibs-data_4%3a3.4.0-0ubuntu3.1_all.deb 
(--unpack):
 trying to overwrite `/usr/share/icons/default.kde', which is also in package 
knetworkconf
Errors were encountered while processing:
 /var/cache/apt/archives/kdelibs-data_4%3a3.4.0-0ubuntu3.1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
===================

Is that a problem in a package?

where should I normally report such errors, to this list, or write a bug 
report?

Donatas