Wifi USB Adapter stops working intermittently

[Colin23erk]

Only got Samsung at the moment

Code:

colin@colin-NC110:~$ iwconfig
wlan0     IEEE 802.11bgn  ESSID:"TNCAP06C388" 
          Mode:Managed  Frequency:2.437 GHz  Access Point: 9C:97:26:06:C3:88   
          Bit Rate=135 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=67/70  Signal level=-43 dBm 
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:29   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

wlan1     IEEE 802.11bgn  ESSID:"TNCAP06C388" 
          Mode:Managed  Frequency:2.437 GHz  Access Point: 9C:97:26:06:C3:88   
          Bit Rate=135 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
          Link Quality=62/70  Signal level=-48 dBm 
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:2   Missed beacon:0