>1.3.88 fixes a few silly problems with 87 (the missing ACK thing and the
>send side timer problems),
This may have been over-fixed, at least in one particular case:
Over a (relatively) slow network TCP connection, my 1.3.88 box sometimes
sends out an ACK immediately followed by a some data; tcpdump does not
show a difference in timestamps. This is far from fatal, of course, but
it would still be better to check for queued data first before sending
an ack (or always sending out queued data if an ack is required, whatever
works best).