MacBook Pro Airport Card disabled

Hello to everyone,
After the reboot following the last early june updates (10.5.7, Airport Client Update 2009-001 and iLife 09) I have a problem with my macbook pro 17' late 2008 (alu) Airport card : it is disabled and can't be enabled !
The airport internal card is BCM43xx.
To solve this after a few readings (I seem not to be the only one concerned with this problem) I tryed to :
o Make again a combo 10.5.7 update
o Re-install Airport Client update 2009-001
o Create another user on the computer -> not user related
o Delete the /Library/Preferences/SystemConfiguration directory, followed with disk authorisations repairing and a reset with PRAM erase -> The Airport started, but turned disabled again after a few seconds ....
I add the wifi network is made with an Airport Extreme, nothing was changed on this side and my other MacBook Pro airport is running fine (same updates, just an older MBP).
I also tryed to have a look at the console but found no errors, I have a frequent message : +(com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions+ but that's all ...
If someone has a few more ideas please help ...
Thanks a lot
Regards.

If this can help, I solved my airport problem by doing a SMC reset of my MBP. The airport card is now detected, with the latest updates.

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