Kees Theunissen wrote:
> repo wrote:
>> On Mon, 12 Mar 2007 10:36:53 -0400, Chris wrote:
>>
>>
>>> I just installed the latest Ubuntu distro to get my feet wet in the
>>> world of Linux. So far so good. The one thing that's very noticeable
>>> is the slowness of the web. Every time one goes to a new website,
>>> there is a long pause (30+ sec.) where Firefox says it's looking up
>>> the site, Opera says nothing. If one clicks a link within the site
>>> being viewed, there is no pause. As this behaviour seems to be common
>>> to both browsers, I'm thinking it's a problem with Ubuntu and may be
>>> able to be fixed by tweaking some settings. Can someone point me in
>>> the right direction?
>>>
>>> Many thanks in advance.
>>>
>>> Chris.
>>
>>
>> Chris,
>>
>> Which DNS are you using?
>> (cat /etc/resolv.conf )
>> What are the results of a ping to IP and name ?
>> Are you using wireless ?
>>
> Yes this could be DNS related. Some time ago a would have said
> that this almost certainly was a DNS related problem. But at
> the moment IPv6 is also a good candidate.
>
> I've seen this lately with debian etch as well as with slackware.
> Im my cases the problem was IP version 6 (IPv6) beeing enabled by
> default on the linux boxes but not in my network environment.
> If the remote site supports IPv6 the linux system first tries to
> make a IPv6 connection and falls back to IPv4 after a time out.
>
> So if your network environment does not support the use of IPv6
> you should disable IPv6 on your system to prevent these delays.
>
> I don't know anything about Ubuntu. On a debian etch edit
> /etc/modprobe.d/aliases and change the line:
> alias net-pf-10 ipv6
> to read
> alias net-pf-10 off # ipv6
>
> And a reboot after that is probably the most easy way to bring
> down your network and all services and bring it up again without
> IPv6 support.
>
> Regards,
>
> Kees.
>

Bingo!

Thank you. The problem is definitely fixed.

Chris.