In my Jaunty installation that won't associate, I just tried downgrading network-manager to 0.7.1~20090213+gitf142e15-0ubuntu1~nm1, and then subsequently I downgraded linux-image to 2.6.28-8.24, and in both cases it won't associate.
For reference, wpasupplicant is at version 0.6.6-2 in both versions of Jaunty (ie the one that does associate and the one that doesn't). The iwlagn driver reports "iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27ks" in both, and both are loading the iwlwifi-4965-2.ucode firmware.
In my Jaunty installation that won't associate, I just tried downgrading network-manager to 0.7.1~20090213+ gitf142e15- 0ubuntu1~ nm1, and then subsequently I downgraded linux-image to 2.6.28-8.24, and in both cases it won't associate.
For reference, wpasupplicant is at version 0.6.6-2 in both versions of Jaunty (ie the one that does associate and the one that doesn't). The iwlagn driver reports "iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27ks" in both, and both are loading the iwlwifi- 4965-2. ucode firmware.