wifi connected strongly, browser won't load page

Let us see whether you can reach a machine (here: the GNU Web server) on the Internet with its IP address and, if that works, with its name. In a terminal (that you find in the Accessories menu) enter the following two commands:
$ ping 140.186.70.148
$ ping gnu.org
To stop them, press Ctrl+C. If the machine is actually reached the 'ping' command writes, every second, one line that looks like the following:
64 bytes from 140.186.70.148: icmp_req=1 ttl=48 time=147 ms

If instead you type
$ ping -w 10 140.186.70.148
$ ping -w 10 gnu.org
it will stop after 10 attempts.

Hello Magic Banana, and aloniv.
Can't imagine why I did not think of ping, must have been the phases of the moon.Tried it this morning, the following being the result...

geeko@hominid:~$ ping 140.186.70.148
connect: Network is unreachable
geeko@hominid:~$ ping gnu.org
ping: unknown host gnu.org
geeko@hominid:~$

I had expected this , because as I said in my post the wifi connection is a solid ioo%. The fault is in one of the two files, wifi or browser. How to sort out their rc or daemon files is too much for me. Hence the post. I hope this clears some of the confusion ahead.

Thank you for your efforts
Phyckel

Hello Adrian Malacoda and akirashinigami,
Attached is the output of lspci and screen grabs of nettools for your inspection. The computer is an Acer Aspire One model number ZG5, the wireless chip is an AtherosAR5BXB63, past successful wifi drivers (in other OS's) were 11g_ath_pci and ath5k (I've not yet figured out how to call up a driver listing for Trisquel).

I've checked the firewall to see if it is interfering with network use. They are present but inactive...netfilter and ufw.

The nettool information show packets being sent, none being received. All relevant ports are open. Yet ethernet works well, packets being sent and received.
Note the attachment 'devices' gives wlan0 address 10.42.43.1 and 'ping' to 10.42.43.1 shows 5 attempts. Doing the same for the bbc.co.uk address shows no packets transmitted and no Seq No, while traceroute is also different. From here on I'm lost.

Thank you both for trying to help.
Phyckel
PS The attachments have gone to trisquei.info/files/ I must have done something inappropriate.

Hello Magic Banana,
Yes, that was a thoughtless oversight. It won't happen again.
Phyckel

Hello to all,
Reading Mark G Sobell's "A Practical Guide To Ubuntu Linux" Chapter 26 Firestarter and IPtables it became clear that this block had something to do with DHCP. The pattern of transfers fitted. So back to wifi setup. The correct fields were filled in, ie SSID, WEP, Infrastructure,AutoDHCP. The trouble appears to lie here. This does not connect to the router yet SSID, WEP, Ad-hoc, AutoDHCP does.

I'm taking this no further.
My thanks to all who tried to assist.
Phyckel

A postscript

further investigation indicates the trouble lies in the kernel, or in the server part of NetworkManager. Below are the relevant printouts.

(excerpts from file)
geeko@hominid:~$ sudo dmesg -c
[ 15.418162] ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
[ 15.659806] r8169 0000:02:00.0: eth0: link down
[ 15.660122] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 15.755543] ADDRCONF(NETDEV_UP): wlan0: link is not ready

[ 15.968948] type=1400 audit(1309177343.409:8): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=998 comm="apparmor_parser"

[ 710.865339] wlan0: authenticate with 00:11:50:af:79:38 (try 1)
[ 710.867830] wlan0: authenticated
[ 710.868165] wlan0: associate with 00:11:50:af:79:38 (try 1)
[ 710.870202] wlan0: RX AssocResp from 00:11:50:af:79:38 (capab=0x431 status=0 aid=1)
[ 710.870212] wlan0: associated
[ 710.871490] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 720.944073] wlan0: no IPv6 routers present
geeko@hominid:~$

geeko@hominid:~$ tail -f /var/log/daemon.log
Jun 27 13:34:44 hominid NetworkManager[820]: (wlan0): device state change: 7 -> 6 (reason 0)
Jun 27 13:34:44 hominid NetworkManager[820]: Activation (wlan0/wireless): asking for new secrets
Jun 27 13:34:44 hominid NetworkManager[820]: Activation (wlan0) Stage 4 of 5 (IP4 Configure Timeout) complete.
Jun 27 13:34:50 hominid NetworkManager[820]: (wlan0): device state change: 6 -> 9 (reason 7)
Jun 27 13:34:50 hominid NetworkManager[820]: Activation (wlan0) failed for access point (mount49)
Jun 27 13:34:50 hominid NetworkManager[820]: Marking connection 'mount49' invalid.
Jun 27 13:34:50 hominid NetworkManager[820]: Activation (wlan0) failed.
Jun 27 13:34:50 hominid NetworkManager[820]: (wlan0): device state change: 9 -> 3 (reason 0)
Jun 27 13:34:50 hominid NetworkManager[820]: (wlan0): deactivating device (reason: 0).
Jun 27 13:34:50 hominid wpa_supplicant[977]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
^C
geeko@hominid:~

$geeko@hominid:~$ rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
geeko@hominid:~$

Phyckel