Topic: fireface uc problem!

hi
i have not long ago bought a fireface uc interface, but i got problems when using it outside my daw, in windows 7; from time to time the sound get horribly distorted without any apparent reason. i can turn it off and on again and it'll be gone. the fireface is connected to a usb bus where nothing else is connected, ive got the newest drivers, and i even set the buffer size up to 512samples (it does make errors next to the latency under the settings sometimes, but i dont know where to check what this means exactly).
hopefully theres something simple ive overlooked, but all help will be greatly appreciated, (really frustrating since this was supposed to be my first proper interface! wink)


regards niels