After 2.4.x ->2.6.3 upgrade, Mozilla is unusable (long pauses)

I'm recently upgraded the kernel
from 2.4.26 to 2.6.3.

Everything works, but Mozilla is now unusable. When I
go to a URL, it just sits there with (e.g.)

Resolving host login.yahoo.com

at the bottom in the status frame, for about 40
seconds. Thinking I maybe had some DNS setup problem,
I tried typing "dig login.yahoo.com" at a shell prompt
- it completed in less time than I could measure with
a stopwatch, probably less than one second. The same
is found with all URLs. It doesn't matter whether I do
the "dig" before or after going to the site with
Mozilla.

It's as though it's waiting for some stupid timeout.
But where do I look?

The output from uname -a is:
Linux Leo 2.6.3-1-k7 #2 Tue Feb 24 20:39:50 EST 2004
i686 GNU/Linux

The Mozilla version is 1.6, or more precisely:
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040113

I'm using the Debian 'Sarge' distro.

I can't even think of anything to investigate. Ideas? Seen something
like this before?

On 9 Jun 2004 12:30:42 -0700, nj wrote:
> I'm recently upgraded the kernel
> from 2.4.26 to 2.6.3.
>
> Everything works, but Mozilla is now unusable. When I
> go to a URL, it just sits there with (e.g.)
>
> Resolving host login.yahoo.com
>
> at the bottom in the status frame, for about 40
> seconds. Thinking I maybe had some DNS setup problem,

Check /etc/resolv.conf for just your dns srevers.
Maybe one is slow, swap lines to try the other one.

I remove the search line. Example only.
$ cat /etc/resolv.conf
nameserver 216.148.227.168
nameserver 204.127.202.142

Bit Twister <BitTwister@localhost.localdomain> wrote in message news:<slrnccer35.ej2.BitTwister@wb.home.invalid>.. .
> On 9 Jun 2004 12:30:42 -0700, nj wrote:
> > I'm recently upgraded the kernel
> > from 2.4.26 to 2.6.3.
> >
> > Everything works, but Mozilla is now unusable. When I
> > go to a URL, it just sits there with (e.g.)
> >
> > Resolving host login.yahoo.com
> >
> > at the bottom in the status frame, for about 40
> > seconds. Thinking I maybe had some DNS setup problem,
>
> Check /etc/resolv.conf for just your dns srevers.
> Maybe one is slow, swap lines to try the other one.
>
> I remove the search line. Example only.
> $ cat /etc/resolv.conf
> nameserver 216.148.227.168
> nameserver 204.127.202.142

Tried it, no difference.
"dig" can also be used to query each DNS separately (dig
@xxx.xxx.xxx.xxx) and it shows that both servers are very fast (query
time less than a second).
Thanks for taking the time to respond.

nj <halbtaxabo-njlinux@yahoo.com> wrote:

> I'm recently upgraded the kernel from 2.4.26 to 2.6.3.
>
> Everything works, but Mozilla is now unusable. When I go to a URL, it
> just sits there with (e.g.)
>
> Resolving host login.yahoo.com
>
> at the bottom in the status frame, for about 40 seconds. [...]

Do other programs show this behaivour? lynx, wget etc.

Is login.yahoo.com still up?

Can you get to other sites?

Can you get to other SSL sites? I'm guessing that login.yahoo.com is an
SSL site (https://). If its only SSL sites that are effected, and
probably also ssh, then perhaps its running out of entropy. Does your
hardware have a random number generator? Do you have support for it
loaded? If not, using an entropy gathering daemon may help.

> It's as though it's waiting for some stupid timeout. But where do I
> look?

Easiest way would be to use strace to see what its doing. Find the PID
of mozilla (`pstree -p $USER' and look for the mozilla-bin process),
then run `strace -p PID -e trace=network,file,read', and report back
where its hanging. Actually, since the trace will be quite large, I
would suggest you send it directly to me, and I'll weed it and post it
to the list, if you can't understand it yourself.

--
Cameron Kerr
cameron.kerr@paradise.net.nz : http://nzgeeks.org/cameron/
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