I have Intel(R) PRO/WIreless 2200 and it works pretty fine with ipw2200. The only thing I had to do was to update the firmware. I also found out that I have some problems on newer kernels (after I do update), but it works pretty fine on the kernel supplied on FC5 installation CDs
yes, I also installed the ipw firmware rpm from livna.
I also use NetworkManager, which I would also suggest is much more stable in FC5 than it was in FC4 - With this running things really did "just work" for me after installing FC5, which was not the case for FC4. I haven't had to do a single bit of network setup and the wireless connects fine, and plays well with my ethernet connection "Broadcom 4400 10/100BaseT"
Since I use KDE I use KWifiManager and it works fine.
I also use KDE, and just for the record NetworkManager works fine with KDE. The previous FC4 NM applet had some icon issues with KDE, but the latest one with FC5 works perfectly. Personally, I think the gnome NetworkManager applet is better than anything available at the moment for KDE (kwifimanager only does wireless no ? Networkmanager does ALL connections).
I am keeping any eye out for a KDE frontend for NetworkManager, which gather is in the pipeline...
Chris
