I run SC400's, various laptops (old and new),and desktops (old and new) without any issues.
Hm, I cannot get the audio working on the SC400's, I believe something is wrong with the mixer. Tried 3.6 and all kind of patches.
Still waiting for the 3.7 CD's, if they arive I will install 3.7 and see if something has changed.
+++chefren