first of all, great Forum here!
i used the search function but found no answer to my problem.

here we go:
i have 2 stacked 828mk2 firewire interfaces. i use the MIDI ports to drive my 2 of my hardware synths. one is conected to my evolver and the other one to my waldorf pulse. for both i have editors but the MIDI connection is not usable once i start cubase5.
because of better memory management i downgraded to XP SP3 yesterday. Before i used Vista and i could use the midiports with no probs same time.
Is there anything i have to change in my XP System?
Any help is much apreciated.
Thanks,
Biggie