I have a WL-520GU flashed with brcm-2.4 8.09.2 (http://downloads.openwrt.org/kamikaze/8 … uashfs.trx).  The WLAN (Air) LED does not work correctly when the WLAN is enabled, it will sometimes light up very dimly and sometimes not light up at all.  The WLAN LED works correctly with DD-WRT and Tomato.  I have searched Google, the forums, and the wiki for hints, but I haven't been able to find a solution (although this issue seems to have been mentioned before).

I have tried:
- Flashing Tomato -> reset to defaults -> Flashing OpenWRT (dim LED)
- Flashing DD-WRT -> reset to defaults -> Flashing OpenWRT (dim LED)
- Flashing OpenWRT -> `mtd -r erase nvram` (erased the nvram as a last ditch effort) -> Reboot (dim LED or no LED at all)

Note that the LED will correctly blink when it is in the 'dim' state.  I can fully control the WLAN LED with the /proc/ filesystem only when WLAN is disabled (it almost seems like there is some sort of conflict, although I haven't been able to find it).

There also seems to be some sort of weird issue where all the network interfaces (vlans, bridges, physical interfaces) all have the exact same MAC address.  I've tried manually editing the nvram variables related to these addresses, but they don't seem to be used by Open-WRT (even after manually running `firstboot`).  DD-WRT and Tomato both obtain the correct MAC addresses for the interfaces, but it seems OpenWRT likes to use the LAN's MAC address for all the interfaces.