....... I am using WEP 128 bit encryption.......
When you use WEP 128 bit it should be something like:
wlan1 IEEE 802.11bg ESSID:"pardus"
Mode:Managed Frequency:2.462 GHz Access Point: 00:0C:F6:36:52:AE
Bit Rate=54 Mb/s Tx-Power=23 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Encryption key:3132-3334-3536-3738-3930-3132-33 Security mode:open
Power Management:off
Link Quality=59/100 Signal level:-20 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
and the corresponding "Network card configuration" image is shown bellow.
In your output I see
Encryption key:off