I'm copying a large amount of files into /coda

A ways through it, venus always dies like this:

11:34:55 Fatal Signal (11); pid 638 becoming a zombie...
11:34:55 You may use gdb to attach to 638

Any ideas?   

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Ashwin Patil                                                                                
ph. (734) 213-2003                     
email: apatil_at_eecs.umich.edu            
University of Michigan at Ann Arbor