malformed read response

[Steve French]

Received a malformed SMBreadX response (the corresponding request was a
read of 16K) from Samba 3.0.4 while doing repeated file copy testing. 
First 40 bytes of the invalid frame follows (note wct of 0 instead of
12):


0000403b ff534d42 2e000000 008001c8 . . @ ; ÿ S M B . . . . . . . Ã
00000000 00000000 00000000 03000000 . . . . . . . . . . . . . . . .
00000000 00ff0000

Ideas?