UFS snapshots (for tarsnap to reference) sometimes panic'd the box. Ick. Yeah, UFS snapshots had issues for a while... had I known you were using them I would

UFS snapshots (for tarsnap to reference) sometimes panic'd the box. Ick. Yeah, UFS snapshots had issues for a while... had I known you were using them I would have encouraged you to switch to ZFS sooner. There were a few ZFS deadlocks, but I never got to the bottom of it and FreeBSD 10 seemed to fix them. Yes, FreeBSD 10 definitely fixed a bunch of ZFS deadlocks.