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Old 03-30-2009, 01:21 PM   #1
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Registered: Dec 2008
Location: Shandong Province
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Networking problems after update ....wishing help!

I can't resolve the problem in the internet,it seems that nobody has the same question like mine.
My OS is ubuntu8.10 and I have use it for some time. It runs well after I have installed it before update ,but once updated wholly, it's networking becomes abnormal. I can't say it doesn't work because it does. It makes me confused.The symptom is :
1. I can connect to some certain website using firefox, like But it is confusing that it can't connect to ! In fact ,so do most websites.
2. I can ping google's IP address ,and it works normally. I thought that it is the DNS that goes wrong, but it is allocated by DHCP and I am using the same with other computers in LAN.
3. I think it is not the hardware problem because a portable OS runs well in my computer.
4. The symptom happens only after I have updated cartain debs . I am not sure whether it is related to the libs or a program itself. So after I installed the OS I only update a few that I am sure they won't result in the networking problem.
5. I suspect it is related to the firewall ,but I don't open it at all.

I have reinstalled the OS for the problems several times,but tonight I updated some debs and it happens again .I don't want to reinstall again and I want to know what on earth result in the symptom. Sorry that my English is not so good. Wishing for your help .
Old 03-31-2009, 09:38 AM   #2
Registered: Feb 2005
Distribution: Arch, CentOS, Fedora, OS X, SLES, Ubuntu
Posts: 327

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I've been running Ubuntu 8.10 since pre-release, and it's been very stable for me, on multiple machines.

As your description of the problem indicates, the very essence of the problem appears to be related to software you're applying to the system after a successful installation.

If you're updating the system with Ubuntu-provided updates I'm really not sure what the problem could be... however, you mention updating "debs" on your system, which sounds like they may be unofficial/unsupported.

What .debs are you installing? If the system stops working reliably after their installation then I would take a closer look at what they're doing/the services they provide. Do you really need them on your system? Can the needed software not be found within Ubuntu's official repositories?

Hope this helps.

(Your English is very good, by the way )


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