WPA2 for Intel 2915ABG?

[Per Steinar Iversen]

I have a laptop running FC4 and with the Intel 2915ABG chip, lspci says:

06:03.0 Network controller: Intel Corporation PRO/Wireless 2915ABG MiniPCI Adapter (rev 05)

I want to connect to a Linksys WRT55AG wireless router, it supports both 
802.11a and 802.11b+g and WEP/WPA for security. There is already a large 
number of active 802.11b+g access points in my area so using 802.11a only 
would be the best choice. In addition it would be nice to use WPA and not 
WEP for encryption.

The ipw2200-firmware-2.2-0.lvn.2.4.noarch.rpm package from Livna has been installed.

Without encryption the connection works very well, though strangely Fedora 
seems unable to see ("iwlist eth1 scanning") 802.11a traffic unless 
802.11b+g is activated also.

There seems to be no obvious way to select 802.11a only using iwconfig or 
system-config-network. Anyone know if 802.11a is even supported or what 
the trick is?

WEP encryption also work, though Linksys seems to think that 128 bits == 104 bits

The real problem is getting WPA to work, using what is called AES 
encryption by Linksys. Is this at all supported by the IPW2200 driver?

Modinfo says that the FC4 version of ipw2200 is 1.0.0, while the version 
at Sourceforge is 1.0.6. From the release notes it seems that many bugs 
have been fixed since the 1.0.0 release. It is likely that installing the 
upgraded driver will help?

-psi