Following my post related to NetworkManager. I have found out about the workaround. If you have x86_64 system with 4GB support enabled, you should disable it in order to make NetworkManager work. I am not sure if that bug affects other distributions so, possibly the bug may be related to the x86_64 kernel. Let see if my theory can be verified.
Busy weekend. I just took a break for making a presentation of Fedora Core 6 and Fedora Project for Vancouver Linux Users Group which will debut on November 20, 2006. A local computer store was kind enough to give me a laptop for the demonstration of Fedora Core 6 (Zod) live spin and Sugar interface from OLPC Project. Should you be interested to view that event and live near Vancouver, here is the address .