Audio drops during recording

Hi guys,
I'm working on my MacBook Pro 2.4 with Logic Pro 8.0.2 and M-Audio Ozonic FireWire interface (latest driver installed). During recording (just one voice track) over an empty session I notice random audio drops. I tryed to change latency and buffer without success. Same equipment and software on my Mac Pro 2.66 works great.
Last year I worked all the summer with the same MacBook Pro (maybe some osx and software versions earlier) without any problem.
Any good ideas ?
Thanks in advance.
Piero

Turn Airport off first and close all other applications.
Recording one track onto the system drive should not be a problem at all but nevertheless try recording all your Audio onto a fast external FW drive in the future.

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