Logic 10.7.2 - getting this super annoying intermittent issue where I'm editing automation, or general tweaking and suddenly the pointer won't be able to pick 'solo' or 'mute' on the channel and won't select automation nodes. It usually lasts about 30 - 60 secs of zooming in out, opening &closing windows etc and suddenly the pointer starts working again. The pointer isn't frozen, it just stops 'working'... any ideas?!