Some years ago i added a wrong login counter to this mod_auth_mysql and a max retry setting.
The account will be disabled after max_retries. wrong_count will be set to 0 by a sucessfull login.
Read the header of the file for more info

mod_auth_mysql.c (apxs -i -a -c mod_auth_mysql.c to build)

PLEASE NOTE: USE CURRENT MADWIFI CVS TO GET MADWIFI WORK WITH 2.6.9 (final)!
sometime ago i patched madwifi to use with 2.6.8* and 2.6.8-mm and 2.6.9-rc kernels. Those patches should work wi th older and 2.4 aswell. They only fix compile errors and do not actually change anything.

the sysctl stuff is now (04-09-24) committed to CVS, so here the patch for 2.6.8-mm and 2.6.9-rc kernel, it works with mainline 2.4 and 2.6 aswell:
madwifi-2.6.8-mm_and_later-040927.patch.bz2

madwifi-2.6.8_and_-mm.patch.bz2 to use with early 08-2004 cvs
madwifi-2.6.8_and_-mm-040821.patch.bz2 for cvs from 08-21-2004 cvs and maybe later