Wireless Configured and Receiving, Firefox don't Connect

I have installed my D-Link Wireless Adapter in accordance with all the howtos I found on the net, and KNetwork tells me I’m receiving. Yet when I open Firefox, for Instance, I receive the message that now Network connection exists. I have run the following scans, and from what I can tell as a newbie, everything seems set up and configured fine. Where might the bug be??

My output on wireless scans:

iam@linux-qvbp:~> sudo /usr/sbin/iwlist scan
root’s password:
lo Interface doesn’t support scanning.

eth0 Interface doesn’t support scanning.

wmaster0 Interface doesn’t support scanning.

wlan0 Scan completed :
Cell 01 - Address: 00:01:38:D8:31:C8
ESSID:“WLAN_B6”
Mode:Master
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=50/100 Signal level=-60 dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s;11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s;24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Extra:tsf=00000036aa31e350

iam@linux-qvbp:~> /usr/sbin/iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wmaster0 no wireless extensions.

wlan0 IEEE 802.11g ESSID:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Tx-Power=27 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

>
> wlan0 IEEE 802.11g ESSID:""
> Mode:Managed Frequency:2.412 GHz Access Point:
> Not-Associated
> Tx-Power=27 dBm
> Retry min limit:7 RTS thr:off Fragment thr=2352 B
> Link Quality:0 Signal level:0 Noise level:0
> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
> Tx excessive retries:0 Invalid misc:0 Missed beacon:0

It doesn’t matter what KNetwork (whatever that is) says - iwconfig
says that you have not associated and authenticated with your AP. If
you had, its ESSID and MAC address would be in the above listing.

The bug is most likely that you have not entered your encryption key
correctly. With WEP, you should use the HEX key, not the passphrase.
If you don’t know why, then Google WEP passphrase problems.

Larry