Error message -36 when copying large files from Firewire drive

I have kept several large audio files as backup on an external LaCie Firewire drive. When trying to copying them back, almost all of them starts to copy, then stops and (after a minute or so) report error message -36.
I have run both Apple's Disktools and the latest Diskwarrior, but no errors are reported. I gues the audio files must have become corrupted... What do you suggest that I do? The contain valuable audio information that I really don't want to get lost.
Helge K.

Not helping but others are having the same problem...
http://discussions.apple.com/thread.jspa?messageID=2564624

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Error code -36 when copying large file

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BDAqua wrote:
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Error message -36 when copying large files from Firewire drive

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