Are you in Albania?
The first problem -
What is b43 doing in there? Did you use a USB adapter that uses a broadcom chip? If not, b43 shouldn't have been loaded. Please post the output of -
***** lsmod *****
b43 356285 0
bcma 40966 1 b43
ssb 51596 1 b43
ath9k 135969 0
ath9k_common 13619 1 ath9k
ath9k_hw 429197 2 ath9k_common,ath9k
ath 19187 3 ath9k_common,ath9k,ath9k_hw
mac80211 513247 2 b43,ath9k
ath3k 13110 0
bluetooth 323534 23 bnep,ath3k,btusb,rfcomm
cfg80211 401436 4 b43,ath,ath9k,mac80211
Second problem, related to the question I asked in the first line -
grep -v ^# /etc/modules
grep -v ^# /etc/rc.local
Is your router set to use correct frequency ranges as specified by Albania's regulation rules? Or are you actually in a different country?
[ 230.461762] ath: Country alpha2 being used: AL
[ 230.461765] ath: Regpair used: 0x3
[ 230.544604] wlan0: AP <MAC address removed> changed bandwidth, new config is 2442 MHz, width 1 (2442/0 MHz)
[ 230.544615] wlan0: AP <MAC address removed> changed bandwidth in a way we can't support - disconnect
The valid frequency range for Albania seems to be from 2.402 GHz to 2.482 GHz @ 20 KHz, with max transmission power being 20 dBm. Make sure your router's frequency settings are within these ranges. Refer to your router's manual to see where to check (or change) that.