thanks for the nice offer on xenon, now i own that on too! smile

on my older system, the cpu jumps to 75 - 80 % cpu on one core of my core2duo processor, when the userinterface is open. it is the same behaviour for au and vst.
this is with the 32bit version of xenon in osx 10.6.8, tested in reaper and tracktion 5.

i have to check it on my mountain lion system, how it behaves there. will also check 64bit there.