no internet, any help/ideas apprecated

I need advice/thoughts on a problem. My 4 year old Averatec laptop has
internet (eth0) with WinXP, but not with Linux (no I am not a troll).
I noticed this the past month, but thought it had to do with the wifi
access points being Linux unfriendly (I used to be able to access them
with wifi in linux on eth1 built in wifi). To complicate matters, or
perhaps solve this myster, my laptop has also been slowly dying, a
soldered connection dissolving where the AC power adaptor plugs into
the side of the laptop. So yesterday I opened up the laptop and
resoldered that connection which solved that problem. But, now I hook
up a LAN cord to the eth0 port and can not get internet (no surfing, no
pinging) with Linux, but I can get internet with WindowsXP, which is
very odd.

I wanted Ubuntu on my laptop, so I wiped out my Mandriva linux on it
and put Ubuntu. No joy, no internet. I then installed SUSE 10.1 and
same problem. Very puzzling. Now, with SUSE 10.1 on the system, when I
boot into SUSE and do ifconfig I see an ip address (laptop is connected
to my router) as seen below. But lauchning Firefox, or attempting a
"ping yahoo.com" gets me nothing. Why no joy in linux, but I can have
joy in WinXP?! Is is that linux needs a more stringent hardware
integrity that may have been fried partially by me opening up the
system (I really gutted it, really, but it seems to have been put back
together ok, and WinXP is running ok)? Or could some firewall in
Ubunty or SUSE be blocking port 80 for internet? (I did not set up any
firewall in linux, if there is one it would be there from the install).

I am perplexed, at a loss of what to do. I went out and bought a new
Compaq Presario laptop, ready to go with that, but heck if I can
salvage my 4 years old Averatec laptop I am sort of attached to it and
would like to resurrect it now that I soldered the AC connection.

averatec:/home/beowulf # ifconfig
eth0 Link encap:Ethernet HWaddr 00:40:45:18:7E:52
inet addr:192.168.1.102 Bcast:192.168.1.255
Mask:255.255.255.0
inet6 addr: fe80::240:45ff:fe18:7e52/64 Scope:Link
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8 errors:0 dropped:4 overruns:0 frame:0
TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1323 (1.2 Kb) TX bytes:2309 (2.2 Kb)
Interrupt:11 Base address:0xd800

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:52 errors:0 dropped:0 overruns:0 frame:0
TX packets:52 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3360 (3.2 Kb) TX bytes:3360 (3.2 Kb)

averatec:/home/beowulf # ping yahoo.com
ping: unknown host yahoo.com
averatec:/home/beowulf # ifdown eth0
eth0 device: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74)
eth0 configuration: eth-id-00:40:45:18:7e:52
averatec:/home/beowulf # ifup eth0
eth0 device: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74)
eth0 configuration: eth-id-00:40:45:18:7e:52
Starting DHCP Client Daemon on eth0... . . . . . no IP address yet...
backgrounding.
averatec:/home/beowulf # ifconfig
eth0 Link encap:Ethernet HWaddr 00:40:45:18:7E:52
inet6 addr: fe80::240:45ff:fe18:7e52/64 Scope:Link
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8 errors:0 dropped:4 overruns:0 frame:16
TX packets:21 errors:4 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1323 (1.2 Kb) TX bytes:2309 (2.2 Kb)
Interrupt:11 Base address:0xd800

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:93 errors:0 dropped:0 overruns:0 frame:0
TX packets:93 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:6790 (6.6 Kb) TX bytes:6790 (6.6 Kb)

.

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