I confirm also that femon 163 + vdr 1.7.0 + H264 + multiproto hang when you change channel while femon is displaying info, happen often when going from H264 to Mpeg2 channels (like simul HD and Simul SD on Astra 19.2)
No problem at all if you close femon before switching channels
I'm happy to see that you have signal strength with S2API, with multiproto plus on S2-3200 nothing appears (Quality + level = 0) :o(
with hvr4000 and multiproto I had signal strength and SNR with old femon version. do you have this figures (snr/sig) with szap-s2 or xmlscan ?
Goga