Titan, I've flashed 1.1.1 through an USB (full wipe), and used the wifi to restore my backup, then after everything got restored (including power-kernel), I've rebooted (after reboot It was on power kernel) and it wouldn't pick up my wifi AP, but it was able to pick up some other ones. (Firmware: DD-WRT v24-sp2 (04/16/10) std in NG-mixed mode, dynamic channel width: 20/40MHz, with hidden SSID, WPA2-AES, and mac filter). After that I've installed the files listed below, and rebooted, checked kernel version, and I was able to see my AP again. So, it seems that it is a problem in 2.6.28-maemo25.