OpenSUSE 11.1 and Intel PRO/Wireless 3945ABG not working

I had a strange problem when Wireless card on one of my laptops with OpenSuse Linux 11.1 was replaced. 

Originally, all network connections were under control of KDE Network Manger (knetworkmanager).  However, after replacing old wireless card with PRO/Wireless 3945ABG, KDE network manager stopped working. It was able to detect my wireless connection, however, it couldn’t able to connect to my Wireless ESSID. I tried rebooting my OpenSuse Linux 11.1  laptop still it was unable to connect.

Eventually I was able to resolve this issue. What I did was not very special but it did work. I put my network under traditional network using YAST. YAST prompted me to install few required packages (only one in my case). After that I configured my wireless connection using traditional network using YAST and I was able to connect my Wireless ESSID successfully. Once I got my wireless connection working, I put my network back under Network manager again. This procedure has resolved my issue and I was able to connect my wireless connection using KDE network manager in OpenSuse Linux 11.1

This procedure has worked for me. I am not sure if it is going to work for everyone else depending on their unique configuration. However, it might help to troubleshoot this issue with their PRO/Wireless 3945ABG card.