problem with kpvnc

Hello I am running 10.04 with trinity 3.5.13 on various laptops. So far kvpnc has worked out with problem, but after installing it a couple of minutes ago in the last laptop I obtain an error when executing kpvnc: kvpnc: error while loading shared libraries: /usr/lib/libQtNetwork.so.4: invalid ELF header I have never seen this error before and I am quite puzzled. Any help is appreciated since kvpnc is one of the essential packages for me. regards Uwe Brauer