I can confirm this bug. With 2.6.20-10 it works fine but not with 2.6.20-11.
I have Linksys Wmp54G v4.0 card. 00:0a.0 Network controller: RaLink RT2500 802.11g Cardbus/mini-PCI (rev 01) [EMAIL PROTECTED]:/etc/modprobe.d$ iwconfig lo no wireless extensions. eth0 no wireless extensions. wmaster0 IEEE 802.11g Frequency:2.412 GHz RTS thr:off Fragment thr=2346 B ra0 IEEE 802.11g ESSID:"HyperWAP" Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated RTS thr:off Fragment thr=2346 B Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 [EMAIL PROTECTED]:/etc/modprobe.d$ modinfo rt2500pci filename: /lib/modules/2.6.20-11-generic/kernel/ubuntu/wireless/rt2x00/rt2500pci.ko license: GPL description: Ralink RT2500 PCI & PCMCIA Wireless LAN driver. version: CVS author: http://rt2x00.serialmonkey.com srcversion: CB1A9F330479AFF351D667C alias: pci:v00001814d00000201sv*sd*bc*sc*i* depends: rt2x00lib,mac80211,eeprom_93cx6 vermagic: 2.6.20-11-generic SMP mod_unload 586 [EMAIL PROTECTED]:/etc/modprobe.d$ -- RT2500-based wireless G network card cannot be set or reset on 2.6.20-11 https://launchpad.net/bugs/92742 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs