I am using the latest AVLinux with the latest Ardour on a machine dedicated to Linux-Audio. I get lots of dropouts/xruns, crashes in Ardour etc. MuSE not running properly at all (losing connection to jack). The only things running reliable are Renoise, Tracktion, MuseScore and SuperCollider and only if I don't use jack, but just alsa exclusively. Been very disappointed with Ardour. Always crashing with demanding plugins (e.g. drumgizmo), with "kind of" video support etc. Also disfunctional in some areas like Midi-Editing, CD-Cue-Export, layered Midi-recording. User interface too complicated and obscured. Hate to say it, but I considered dealing with Ardour to be a waste of time.