Hi Daniel / Quentin. I don't know if you've picked up on this yet but Ardour 2.3 uses a new library, called libslv2 (LV2 seems to be some kind of extension for the LADSPA plugins). It can (optionally) be compiled without LV2 support though. If I type "libslv2" into Synaptic, nothing shows up. If I type "LV2" or "SLV2" it shows me some (irrelevant) libraries relating to Apache network security. Any ideas about where libslv2 can be obtained ? (pref. somewhere compatible with Synaptic).