Hi Andy, > Also, I'm not sure if this makes a difference, but the two times > I was able to reproduce this today (yes, two times... the first > time, Wireshark crashed *sigh*), the connections/requests were > HTTP over SSL.
For the record: are you using HAproxy SSL functionality or do you use something else, like stunnel or stud in front of haproxy? That would make a big difference. Also, with what IE release on which Windows OS have you been able to reproduce this? A lot of things have changed in the IE releases and the tcp stacks as well (one of the links talks about a bug in the NT 4.0 tcp stack for example). Regards, Lukas

