Thankyou very much Steve. This has indeed solved my problem.
I used the following to change it:-

sysctl -w net.ipv4.tcp_ecn=0

Steve Ponsford wrote:
> 
> Hi Antony,
> What you might be having problems with is explicit
> congestion notification.  Try this to see if your
> kernel supports it and has it activated
>   cat /proc/net/ipv4/tcp_ecn
> if it returns a 1 then its activated.
> Do an
>   echo 0 >/proc/net/ipv4/tcp_ecn
> to turn off the ecn bits then try your browser again.
> Try it without the junkbuster proxy first.
> I've been using the latest pretest kernels 2.4-test9-pre(2-5)
> and ppp-2.4.0-2mdk and this works for me. I don'tknow
> if the latest cooker 2.4 hackkernels have ecn activated
> in them so it might not be your problem, but give it a try
> anyway.
> 
> Antony Suter wrote:
> >
> > There seems to be a bug in the ppp code in kernel 2.4.0 that stops me from
> > going to certain web sites.
> >
> > This bug does not occur when I take the same system to a friends and access
> > the Internet via ethernet. This bug also did not occur when I was running a
> > 2.2.16 kernel with the latest ppp.rpm ppp-2.4.0-2mdk. This bug can be
> > bypassed when I use a proxy on the other side of my ppp device. This bug
> > cannot be bypassed when I use a proxy on this side of my ppp device
> > (junkbuster on my system).
> >
> > A web site I can get to is http://slashdot.org/
> > A web site I cant get to is http://www.theregister.co.uk/
> >
> > My system is 98% cooker, which includes 100% of cooker development compilers
> > and libraries. My kernel is "Linux gamut.epsilon 2.4.0a4-0.18mdk #2 Mon Sep
> > 18 04:17:59 EST 2000 i686 unknown". My compiler is "gcc-2.95.2-12mdk". I
> > graft my own cflags into the kernel makefile "CFLAGS='-mcpu=pentiumpro
> > -march=pentiumpro -O3 -fomit-frame-pointer -fexpensive-optimizations
> > -funroll-loops -fschedule-insns2 -fno-exceptions -fno-rtti'".

--
- Antony Suter  ([EMAIL PROTECTED])  "Examiner"  openpgp:71ADFC87
- "And how do you store the nuclear equivalent of the universal solvent?"

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