Comment 10 for bug 62106

the problem of changing mode in past kernels is becouse madwifi drivers changed the way to configure the device.

In past vesions you do:

iwconfig ath0 mode xxxxx

but now you have to configure this way (http://madwifi.org/wiki/UserDocs/AdHocInterface):

wlanconfig ath0 destroy
wlanconfig ath0 create wlandev wifi0 wlanmode adhoc

This worked for me, but the signal quality slugish my network. The init.d scripts aren't doing they job right. The drivers chnged the way to configure it and init.d script are the same of old version. The bad signal problem is a driver ensue.