ipw2200: very slow association with Kernel 2.6.22

Hello everybody,
Since I have updated the kernel to 2.6.22, the wifi connection is very 
slow to establish. I am using ipw2200 with WPA and TKIP encryption and 
it takes sometime more than 5 minutes for wpasupplicant to connect to 
the network. If I use kernel 2.6.21 with the same version of 
wpasupplicant, association occurs instantly. So, the problem seems to be 
with the ipw2200 or ieee80211 drivers rather than with wpasupplicant.

Does anybody encounter the same problem ? Is there any solution to it ?
Thanks for your help,

François Valenduc

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