Here is a diff of one example of the corruption that is occuring which I believe to be a bug in the pipe device. This diff is out of a multi-hundred-megabyte file:
staid# diff t3.cuthex t4.cuthex 86c86 < 00000550 f7 7e f4 05 48 2f 28 ef 1f 9b b6 49 5d 76 f5 13 |.~..H/(....I]v..| --- > 00000550 f7 7e f4 05 48 2f 28 ef f7 7e f4 05 48 2f 28 ef |.~..H/(..~..H/(.| -Matt To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message