I can confirm this regression for iwl4965 card on my Toshiba Satellite A200.
Also some of the channels of 802.11a standard became unavailable. As Martin,
I also had no problems with kernel 2.6.25. I happen to face with this problem
as my home-AP tuned for 13th channel. Suddenly, after upgrade I don't see it.
Good to mention, that airodump-ng tool from aircrack-ng suite does
see beacon frames from my AP running on 13th channel. So this limitation
seems to apply only for Managed mode.
Kernel: Linux 2.6.25-2-686 (SMP w/2 CPU cores)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages linux-image-2.6.26-1-686 depends on:
ii debconf [debconf-2.0] 1.5.22 Debian configuration management sy
ii initramfs-tools [linux-initra 0.92i tools for generating an initramfs
ii module-init-tools 3.4-1 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.26-1-686 recommends:
ii libc6-i686 2.7-13 GNU C Library: Shared libraries [i
Versions of packages linux-image-2.6.26-1-686 suggests:
ii grub-pc [grub] 1.96+20080724-10 GRand Unified Bootloader, version
pn linux-doc-2.6.26 <none> (no description available)