Mac checking it seem to work a bit better but makes no the big advantage, but I have only one UB device to choose.

Do you know what internally happend ? beside that a different part of code will be used.

I learned for all not to open too many programms using my soundcard in conjunction with vista

Do you have any experiences with Mac computers and Mac OS? do they behave more reliable ?

to the other point: rb - I got a info from pg support - that they could reproduce the problem with rb and realtrack - should be a conflict with e-mu 0202 and e-mu asio divers - but also it apears with asio4all - they are in contact with e-mu - lets wait and see what happend.

kudos to the support of pg

Thanks a lot Mac

Sönke