[ubuntu] Cannot install wifi driver after kernel upgrade

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http://ubuntuforums.org – I have a dell inspiron 1525 32bits with ubuntu 11.04 gnome 2.32.1, processor architecture i686 and upgraded the kernel from 2.6.38-8 to 2.6.39. Everything appears to be fine except that I no longer have wireless. I tried to install the driver with 'Additional Drivers' and I see that the Broadcom STA wireless driver is no activated. After trying to activate it I get this message: "Sorry, installation of this driver failed.Please have a look at the log file for details: /var/log/jockey.log" These are the last three lines of the jockey.log file: 2012-08-03 09:43:52,015 WARNING: modinf (Hardware)