There is no iwn-firmware-5.3. The latest package is rev 5.2. It contains the exact same images than you can download from: http://intellinuxwireless.org/?n=Downloads
Please run "ifconfig iwn0 debug" before "dhclient iwn0" and send me the output. | media: IEEE802.11 OFDM54 mode 11g (autoselect mode 11g) Have you forced media to OFDM54? If so, try with "ifconfig iwn0 media autoselect". Damien
