LinuxQuestions.org - could this be an issue of network card???

hi all,

i use fedora 5 which dual boots with XP and the sys configuration is below:
mobo : asus kbs series
processor : AMD Athlon 2800+ n 80G HDD with 512 RAM...
there has been a strange prob right from installation of Fedora with this internet , we have a LAN here and after all lan and other network settings being intact , i can ping to all other comps on my network..

now the real problem is i can't connect to internet say neither i can surf in any browser,no messenger works , and even tried yum in vain after configuring it to use with a proxy coz it worked with many of my frenz comps... who use asus and amd ...

even internet settings work perfectly on my XP ...

i strongly feel that there are no probs regarding network settings as i myself have configured successfully the same on many of my frenz comps.. and even my firewall is disabled..

plzz donn feel bored and i go here providing as many details as i can:

a sample output of nmap with one of the servers is below n works intact..

Code:

[root@localhost ~]# nmap 172.31.100.18 -p3128



Starting Nmap 4.00 ( http://www.insecure.org/nmap/ ) at 2007-01-29 19:55 EST

Interesting ports on 172.31.100.18:

(The 1663 ports scanned but not shown below are in state: closed)

PORT    STATE SERVICE

3128/tcp open  squid-http



Nmap finished: 1 IP address (1 host up) scanned in 13.959 seconds

kernel version:

Code:

[root@localhost ~]# uname -r

2.6.15-1.2054_FC5

as it might be required the output of /sbin/lspci

Code:

[root@localhost ~]# /sbin/lspci

00:00.0 Host bridge: Silicon Integrated Systems [SiS] 760/M760 Host (rev 03)

00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SG86C202

00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS965 [MuTIOL Media IO] (rev 47)

00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev 01)

00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] Sound Controller (rev a0)

00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f)

00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f)

00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f)

00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller

00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] Unknown device 0190

00:05.0 RAID bus controller: Silicon Integrated Systems [SiS] 182 SATA/RAID Controller (rev 01)

00:06.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge

00:07.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge

00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration

00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map

00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller

00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control

01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760/761 PCI/AGP VGA Display Adapter

and somthing regarding "wget"

Code:

 this output is same as on my frenz comp.. so that shudn't be a prob..

[root@localhost ~]# wget http://djha:djha@172.31.100.18:3128/yahoo.com

--20:07:29--  http://djha:*password*@172.31.100.18:3128/yahoo.com

          => `yahoo.com'

Connecting to 172.31.100.18:3128... connected.

HTTP request sent, awaiting response... 403 Forbidden

20:07:29 ERROR 403: Forbidden.

hope u reached here... now as i have mentioned earlier too net works intact on my XP but doesn't on Fedora , i feel it can't be a problem of my network card... but what it could be then???

any valuable suggestions are appreciated...

regards
Vijay.