I have a home network based on a SITECOM WL-366 router.
I have ten different devices connecting to it (computers - LINUX / Windows), Smart phones (apple, Android, BB, Nokia).

However one computer causes problems (HP pavillon dv 6 - the biggest piece of crap I ever used btw):

the network manager shows a connection to my network

ifconfig wlan0 shows the interface with ip address, a certain number of Tx Rx packets - seems all normal thus;

Ping 127.0.0.1 - shows correct behaviour (no loss of packets, standard delais)

However ping 198.162.0.1 (the router) is stuck, i.e. no packet returned from the router

So, any ideas what I can do here?

Ah yes an other clue: The same computer connects to other networks all right ....

Post the out put of this command (root needs to run this command):

What does this command return:

Also ... what do you have in this file:

1 members found this post helpful.

Thanks for your quick reply. Here are the requested details.
Netstat -rn:

Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 wlan0
192.162.0.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
192.168.0.1 0.0.0.0 255.255.255.255 UH 0 0 0 wlan0

Remark:
netstat -rn on a running configuration (the laptop used to post this looks slightly different in the last line:
>> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0

ifconfig:
eth0 Link encap:Ethernet HWaddr c8:0a:a9:32:90:0d
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:45 Base address:0x4000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:240 (240.0 B) TX bytes:240 (240.0 B)

wlan0 Link encap:Ethernet HWaddr f0:7b:cb:3d:dc:91
inet addr:192.162.0.102 Bcast:192.162.0.255 Mask:255.255.255.0
inet6 addr: fe80::f27b:cbff:fe3d:dc91/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:243 errors:0 dropped:0 overruns:0 frame:0
TX packets:133 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23647 (23.6 KB) TX bytes:23983 (23.9 KB)

Resolv.conf:
# Generated by NetworkManager
domain SitecomWL366
search SitecomWL366
nameserver 192.168.2.254

>> this is exactly as on my working laptop