usb wlan wont find or connect to network

Hi,
I have a USB key adapter made by excel, which i believe to be a rebranded version of this (http://www.cameo.com.tw/products/html/wireless/wlb-1403.htm). USB vid/pid is  0x3eb/0x7613.
It is picked up by the driver (at76c505-rfmd2958, cvs version 0.12beta6), and the interface wlan0 is created. However, it appears not to be able to join other networks. The log below shows trying to connect to an adhoc network, after setting:
iwconfig wlan0 essid tom mode ad-hoc
ifconfig wlan0 10.1.1.2

Feb  9 14:39:13 slowpoke kernel: hub.c: USB new device connect on bus1/1, assigned device number 5
Feb  9 14:39:13 slowpoke kernel: at76c503-fw_skel.c: using compiled-in firmware
Feb  9 14:39:13 slowpoke kernel: at76c503.c: wlan%%d: state 9 -> 9 (INTFW_DOWNLOAD)
Feb  9 14:39:14 slowpoke kernel: at76c503.c: wlan%%d: state 9 -> 10 (EXTFW_DOWNLOAD)
Feb  9 14:39:16 slowpoke kernel: usb.c: ignoring set_interface for dev 5, iface 0, alt 0
Feb  9 14:39:16 slowpoke kernel: at76c503.c: wlan%%d: state 10 -> 0 (INIT)
Feb  9 14:39:16 slowpoke kernel: at76c503.c: $Id: at76c503.c,v 1.42 2004/01/10 20:31:17 jal2 Exp $ compiled Feb  9 2004 13:16:20
Feb  9 14:39:16 slowpoke kernel: at76c503.c: firmware version 0.90.0 #44 (fcs_len 4)
Feb  9 14:39:16 slowpoke kernel: at76c503.c: device's MAC 00:90:96:31:88:0d, regulatory domain <unknown> (id 255)
Feb  9 14:39:16 slowpoke kernel: at76c503.c: registered wlan0
Feb  9 14:40:26 slowpoke kernel: at76c503.c: wlan0: PRIV_IOCTL_SET_DEBUG input 7: 100003 -> x186a3
Feb  9 14:40:26 slowpoke kernel: at76c503.c: wlan0: PRIV_IOCTL_SET_DEBUG, old 0x180003  new 0x186a3
Feb  9 14:40:26 slowpoke kernel: at76c503.c: wlan0: netif running 0 queue_stopped 0 carrier_ok 1
Feb  9 14:40:30 slowpoke kernel: at76c503.c: wlan0: PRIV_IOCTL_SET_DEBUG input 9: 0x100003 -> x100003
Feb  9 14:40:30 slowpoke kernel: at76c503.c: wlan0: PRIV_IOCTL_SET_DEBUG, old 0x186a3  new 0x100003
Feb  9 14:40:30 slowpoke kernel: at76c503.c: wlan0: netif running 0 queue_stopped 0 carrier_ok 1
Feb  9 14:42:09 slowpoke kernel: at76c503.c: wlan0: PRIV_IOCTL_SET_DEBUG input 9: 0x180003 -> x180003
Feb  9 14:42:09 slowpoke kernel: at76c503.c: wlan0: PRIV_IOCTL_SET_DEBUG, old 0x100003  new 0x180003
Feb  9 14:42:09 slowpoke kernel: at76c503.c: wlan0: netif running 0 queue_stopped 0 carrier_ok 1
Feb  9 14:45:07 slowpoke kernel: at76c503.c: wlan0 param: ssid tom (746F6D) mode adhoc ch 10 wep disabled key 0 keylen 0
Feb  9 14:45:07 slowpoke kernel: at76c503.c: wlan0 param: preamble long rts 1536 frag 1536 txrate auto excl 0
Feb  9 14:45:07 slowpoke kernel: at76c503.c: wlan0 param: pm_mode 1 pm_period 0 auth_mode open scan_times 10 120 scan_mode active
Feb  9 14:45:08 slowpoke kernel: at76c503.c: wlan0: state 0 -> 1 (SCANNING)
Feb  9 14:45:08 slowpoke kernel: at76c503.c: wlan0 BSS table (curr=00000000, new=00000000):
Feb  9 14:45:08 slowpoke kernel: at76c503.c: wlan0 BSS table (curr=00000000, new=00000000):
Feb  9 14:45:08 slowpoke kernel: at76c503.c: wlan0: state 1 -> 6 (JOINING)
Feb  9 14:45:08 slowpoke kernel: at76c503.c: wlan0 find_matching_bss: returned 00000000
Feb  9 14:45:08 slowpoke kernel: at76c503.c: wlan0: state 6 -> 8 (STARTIBSS)
Feb  9 14:45:08 slowpoke kernel: at76c503.c: using BSSID 02:00:99:9a:1d:15

In addition to this, iwspy says: "wlan0   No statistics to collect".

At one point, i managed to get my laptop to ping another computer that connected to the adhoc network created by my computer. However, the remote computer could not ping my computer back.

Also, on the webpage, it is mentioned that  there is no monitor support because of firmware limitations. Are these addressable by this driver, or does atmel control the firmware?

Thanks in advance,
Rohan

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