I have a Hamerfall DSP card which I use with an old G4 Power book 10.5.8, as a backup system on important jobs. It has ceased to lock properly. The machine finds the card and locks very momentarily to the Digiface but then appears to lose lock.  The digiface is also used in the studio with a mac pro on 10.6.? and an internal HDspe card.  This has been kept up to date with both FW and SW.  I am guessing that the G4 needs a driver update and would like to be sure which one, if it can be done at all. Hopefully won't need the backup as the MacBook pro and fireface 400 seem to be on good form, but it is comforting to have a plan B!
Many thanks
Chris