FabFilter Volcano version 1.11 fixes possible internal overflows that could occur with certain combinations of settings and input sounds. These overflows would result in extreme CPU spikes. The Clean preset has been changed to reduce distortion with loud input sounds, but it is still not intended to be completely transparent.
FabFilter One version 3.02 fixes problems with preset automation in Logic and with loading presets in the VST Mac OS X version. Compatibility with Ableton Live has been improved as well.
Find One and Volcano 3 in the KVR Marketplace