I have duel boot (XP & Jaunty). I have installed Jaunty in one of my parition through wubi installer.

Problem is, though my network connection shows active, I am unable to connect internet via firefox browser or any other browser.

1. I have plugged in ethernet wired connection.
2. I have single network connection (wired connection1) by default.
3. I have edited this connection to make it static.

IP ADDRESS 192.168.1.10
NETMASK 255.255.255.0
GATEWAY 192.168.1.1
DNS SERVER 8.8.4.4

Some time I am able to connect websites and sometimes not. I do not know the reason for this frequent problem.

Though the NM applet shows connection is active. When I ping my
IP address 192.168.1.10 and host address 127.0.0.1, in NETWORKTOOLS,
it pings and shows the 100% successful packets. But Iam unable to access sites and shows "page could not be displayed" error.

I went through all your networking problem THREADS but I couldn't
find the answer.

Please help me to access the web sites. We can operate Ubuntu only when
internet connection management is flawless otherwise this operating system is useless.

There are a few things that could be your problem.
1 - you edited the network connection to make it static. Are there multiple devices on your LAN with a DHCP server that could be conflicting?
1A - is there a particular reason you made it static?
2 - pinging 192.168.1.10 and 127.0.0.1 SHOULD show 100% success. You are asking the host to ping itself. What happens when you ping something remote, like google.com?
3 - Can you ping the gateway (192.168.0.1). What about question 2: ping something remote?
4 - if you can successfully ping, try doing a traceroute to an external site, such as google.com
5 - Accessing web pages requires DNS access. 8.8.4.4. is google's public DNS. DOes your ISP provide a DNS server that you could use instead?
6 - What happens when you perform an nslookup, for sites such as google.com.

Thank you for your immediate response.
As I have already mentioned, some time I am able to access websites. some times not. WHY???

With the same GATEWAY and the same DNS SERVERs, I am able to access the sites, some times not.

Hi,

First thing is to check if your DNS server is responding properly when you browse the sites

Write a shell script to do a dns lookup for the sites you browse

Run the script when you are browsing the sites

Mario's suggestion is a good one. One of the possibilities you are facing is that your DNS is NOT working properly. Performing the DNS queries as he suggests will tell you if there is a difference between when you can connect and when you can't.

Another possibility is that there is some form of outage in the network, either on your lan or beyond it. Running ping and its cousin, traceroute, will determine if you have point - point capability.

The fact that your connections are intermittent suggests either a flaky connection OR a conflict, which is why I asked about your assignments.

So far you haven't provided much information to help you. You have said that your connection works sometimes and that your client PC can ping itself either by its LAN IP address or its localhost addresses.