I don't know if starting a new thread is the best idea, but the other
topic's tree is really dense now, and I didn't want this to get buried.
Here are a couple of things to try:
(1) It occurred to me that most of the people having trouble are probably
using the NM that shipped with FC5. There is a NetworkManager update in
updates-testing that you should really try.
yum --enablerepo=updates-testing NetworkManager
The update has been in testing for nearly a month. I don't know why some
of these updates are taking so long to be rolled out.
(2) You also want the initscripts from updates-testing (also long overdue
to be pushed out, IMO). If your machine has multiple NICs, then the
current initscripts can swap them on boot and cause lots of flakiness.
Once initscripts is updated, clear the DHCP leases from /var/<something
dhcp related> before trying again. If it were me, I'd delete all devices
in system-config-network, reboot, and reconfigure the interfaces as needed
as well.
(3) Some of the reliability issues are due to interactions between NM and
flakey drivers, and are not NM's fault. (Usability is a different
matter.) It might be worth trying the Netdev kernels at
http://people.redhat.com/linville/kernels/fedora-netdev/. They contain
many driver updates.
(4) There are a number of useful hints for NM and ipw2200 at
http://www.ces.clemson.edu/linux. Users of other drivers may find some
useful information there as well.
(4) For real help with NM, send your issues to the developers' list,
networkmanager-list@xxxxxxxxx (subscribe at http://mail.gnome.org). For
real bugs, file them in Fedora's Bugzilla. The goal of NM is to make
managing connections to multiple networks painless. If it isn't quite
there yet, the developers can use all the help you can provide.
HTH.
--
Matthew Saltzman
Clemson University Math Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs