Bad noise from USB audio input

Using Roland UA-30 USB audio input device with ibook 1.2ghz with Logic Pro 7.
Getting nasty noise. Any other ways of getting audio into my ibook without the fuzz and buzz ?

ok first of all to help your ibook 1.2ghz's power, upgrade your rams, atleast 1.5GB, safer side will be 2.5GB
2) get the pro app if you haven't done so
http://www.apple.com/support/downloads/proapplicationsupport30macosx1039.html
3) I was gonna say get the latest update for the UA-30 but it comes with OSX
4) try not to set you buffer size too high, try around 128-256 or better 512
5) make sure your cables are good/pro cables
6) record using other applications to see if its logic or just the card itself
stash

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