I got around this bug a loooooooong time ago with samba. This goes even back to 1997 one should think Apple got around fixing it. But then again its Apple ....

http://julipedia.blogspot.com/2006/02/samba-performance-under-mac-os-x.html

http://mail-index.netbsd.org/tech-net/2003/01/28/0004.html

...

This bug has been documented for quite some time now, and NetBSD fixed. It thusly (this is from the tcp_input.c CVS log):

----------------------------
revision 1.37
date: 1997/12/11 06:33:29; author: thorpej; state: Exp; lines: +19 -9
Fix the "stretch ACK violation" bug documented in internet draft
draft-ietf-tcpimpl-prob-02.txt. Also, fix another bug in the header
prediction case where an ACK would not be sent when it should be.
----------------------------

I know the person who was bitten by this reported it to a clueful friend
at Apple, but it was not fixed for the Jaguar release.

Of course, Apple *should* have used NetBSD's TCP, but they had people
beating the FreeBSD drum there, and now all of us Mac users have the
pleasure of experiencing the consequences of that choice.

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