I found out the problem...actually it was the avahi-daemon that was creating problem. I could see the available wireless networks...but couldnt connect to them. Once I switched off the service and killed the existing avahi processes, I could connect to wireless network without any issue. <div class="gmail_quote">On Thu, May 8, 2008 at 12:34 AM, Flavio Costa <<a href="mailto:flavio.cdc@gmail.com">flavio.cdc@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Using nm-applet seems the easiest way of doing it, but you can try issuing this command: "iwlist <wireless-interface\> scanning" <div class="gmail_quote"><div><div></div><div class="Wj3C7c">On Wed, May 7, 2008 at 2:14 PM, Ankur Jain <<a href="mailto:ankurj@gmail.com" target="_blank">ankurj@gmail.com</a>> wrote: </div></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="Wj3C7c">Hi I upgraded to Hardy from Gutsy on my Dell Inspiron 1520. Now the wireless router doesn't work at all. Though the wifi card is detected. Could someone guide me through. Output of "lspci | grep 3945 " 0 c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02) Output of iwconfig eth1 is given below : eth1 IEEE 802.11g ESSID:"" Nickname:"" Mode:Managed Frequency:2.462 GHz Access Point: 00:1E:E5:69:8B:85 Tx-Power=27 dBm Retry min limit:7 RTS thr:off Fragment thr=2346 B Encryption key:off Power Management:off 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 Output of lshw -C network is *-network description: Wireless interface product: PRO/Wireless 3945ABG Network Connection vendor: Intel Corporation physical id: 0 bus info: pci@0000:0c:00.0 logical name: wmaster0 version: 02 serial: 00:1b:77:81:0d:30 width: 32 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list logical ethernet physical wireless configuration: broadcast=yes driver=iwl3945 latency=0 module=iwl3945 multicast=yes wireless=IEEE 802.11g *-network description: Ethernet interface product: BCM4401-B0 100Base-TX vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: 02 serial: 00:19:b9:85:5e:ec size: 100MB/s capacity: 100MB/s width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=b44 driverversion=2.0 duplex=full ip=<a href="http://192.168.1.100" target="_blank">192.168.1.100</a> latency=64 link=yes module=ssb multicast=yes port=twisted pair speed=100MB/s Could someone help me connect to my wifi network (Open, unrestricted as of now) -- Regards Ankur Jain <a href="http://ankurjain.org" target="_blank">http://ankurjain.org</a> </div></div>-- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com" target="_blank">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div> -- Flávio Coutinho da Costa -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div> -- Regards Ankur Jain <a href="http://ankurjain.org">http://ankurjain.org</a>