rpmlint problem

[Eric Tanguy <eric tanguy univ-nantes fr>]

I'm trying to package libupnp in FE and i have some errors in rpmlint i
can't understand : 
E: libupnp invalid-soname /usr/lib/libupnp.so.1.2.1 libupnp.so
E: libupnp invalid-soname /usr/lib/libixml.so libixml.so
E: libupnp invalid-soname /usr/lib/libthreadutil.so libthreadutil.so
W: libupnp one-line-command-in-%post /sbin/ldconfig
W: libupnp one-line-command-in-%postun /sbin/ldconfig

Some help ?
Thanks

--
Eric Tanguy | Nantes, France 
<eric tanguy univ-nantes fr>
Key : A4B8368F | Key Server : subkeys.pgp.net 
Fedora Core release 4 (Stentz) sur athlon kernel 2.6.14-1.1653_FC4