Wireless is flaky after hibernate

[Roshan Mansinghani]

First some particulars about my system:

Kernel version:  2.6.15-26-686
ndiswrapper-utils 1.8-0ubuntu2
hibernate 1.93-0ubuntu1
suspend2 2.2.7.4-1

I use ndiswrapper with my broadcom based wireless chipset to get
wireless working on my laptop.  When I hibernate the laptop and come
back, I can connect to wireless networks using my laptop -- but it
only lasts for around 2 minutes or 1 minute, it varies.  Then, I have
to rerun dhclient to connect again.  If I reboot, my wireless
interface works fine.  I am trying to figure out what the problem is.
Please let me know what other information that I could give that would
provide more insight into the problem.  If there are log files to
check, please let me know which files to check.

Thanks.