Slow Internet browsinf and apt-get update

[vaikz]

Hi,

I have 2 pcs, one w/ ubuntu intrepid and one a dual boot w/ xp and debian. I have a router w/ is a Linksys WRH54G and my modem is a Prolink 5200. I have this ubuntu for how many months now and debian just a couple of weeks. No problem w/ internet browsing.

This week I had a problem w/ my connection and we've found out that my modem was reset. My username and password is gone and also my port forwarding settings. The modem was reset to its default settings from my subscriber. Then they fix it by filling up the username and password.

On windows I can browse normally. But my linux os can connect to the internet but very slow. It can't even browse or apt-get update. I thought the problem is the linux itself. Try the live cd Fedora and Ubuntu. same result.

now I'm out of ideas. can anybody help and explain.

[elija]

It sounds very like what happens to me with a fresh install of Ubuntu. In my case it is my router not handling IPV6 traffic particularly well. OK then very very badly

I fix it by doing the following

Prior to 9.04 (Jaunty)

Press Alt + F2
Type "gksu gedit /etc/modprobe.d/aliases" (with out the quotes) and press enter.

find the line that says

alias net-pf-10 ipv6

and change it to

#alias net-pf-10 ipv6

and type the following 3 lines

alias net-pf-10 ipv6 off
alias net-pf-10 off
alias ipv6 off

(Jaunty)
Open a terminal and run the following

cat /proc/sys/net/ipv6/conf/all/disable_ipv6

If the result is a 0 then IPv6 is enabled

To disable it run the following command

sudo echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6

You may need to restart your computer for the changes to take effect.

Then I stop Firefox from asking for IPV6

Open firefox and browse to about:config
Search for network.dns.disableIPv6 and set the value to true.

[twoHats]

If Elija's fix dosn't do it - it may be a changed DNS server. Check out OpenDNS | Providing A Safer And Faster Internet for free DNS server. No affiliation. I have been using it for a year or so with no hastles. DNS can slow down browsing (and i believe repository operations) tremendously. I have seen it as you describe. This is a pretty quick fix!

[vaikz]

@Elija
Thanks for all the replies guys, but I'm already aware of IPV6 need to be disabled. I already did this. My ubuntu intrepid is running for months now and only two weeks for debian.
In Debian, I only installed the standard system coz I want to upgrade to sid and install only minimum apps. This problem happens when I installed Debian. I don't if this is related to installing debian.

@TwoHats
I'm using opendns on my intrepid and also tried freednsserver.org.

Right now I'm really out of options. I've tried running fedora live cd and jaunty live cd's on vm inside windows and there's no problem w/ internet browsing and system update. But when I directly run thos CD's on both PC's that's when the problem occur.

I already tried contacting my ISP regarding about this and let's what will happen. At the same time I'll scan the net If I had related problems and also here If somebody can help.