Hi Grant, you wrote: > I'm running an old set up that has been very stable until I added a > second delta 1010 card this week. > G4 Quicksilver 867 Khz > 1 GB Ram I ran a G4 1 MHz with a D1010 and a D410 until recently - I had 1.5 Gb of RAM - maybe you need a bit more? > 2 off Delta 1010 PCI Cards > > And since installing the second Card performance has dropped off > really noticably; resulting in more "Core Audio Overload" messages - > but also a new problem I've not had before that of "Unable to > synchronise Audio and Midi" You have got the two cards linked physically, haven't you? You need to plug a digital out from one card into the digital in of the other. Also in the M-Audio panel - check you've chosen the right one to act as master (the one you're using digital out from). Kind regards, Mike. ::: ::: from Mike Levon ::: ::: H O L Y G R O U N D R E C O R D S ::: ::: http://www.holyground.co.uk ::: ::: England's first independent record label