Since the problem comes from the padlock_aes module that of course does not find any hardware on my pc, I went in the /lib/modules/2.6.24-xxx/modules.alias and I commented out the first two occurrences of AES that link to padlock and geode hardware.
So, the airo driver works perfectly now and the boot process is smooth as usual. Somebody should modify the configuration in a way that aes_generic or something like that is used on normal hardware.”