I just have time for a quick reply.
First of all install xulrunner and webkit with gslapt.
Then download liferea source at www.brothersoft.com/liferea-download-216981.html
Right click on the file and choose "extract here gzipped tar"
open the resulting file..right click on any white space in the file and choose "open terminal here"
Then..in the terminal..
make install (as root user)
I will be back tomorrow if you need to know more, unless someone else comes to help.
I think the wxgtk, upgrade did not sit well with this package, and it needs to be recompiled to see the changes.