Slow internet speeds

[Mountain Man]

This is an odd problem: I have very slow internet speeds in Linux but not in Windows on this same computer.

What could be causing this?

[Mountain Man]

Nevermind... it was apparently an ipv6 problem.

Solved it with:

/etc/default/grub

added ipv6.disable=1 to the GRUB_CMDLINE_LINUX_DEFAULT entry.

[Mountain Man]

Hmmm... I thought that solved it, but now it's back to being slow again. What the heck is going on?

By the way, this problem started shortly after a recent upgrade to KDE 4.11.00. I don't know if it's a KDE problem or a coincidence.

Here's the ping output so you can see what I'm dealing with:

PING www.google.com (74.125.131.103) 56(84) bytes of data.
64 bytes from vc-in-f103.1e100.net (74.125.131.103): icmp_req=1 ttl=45 time=338 ms
64 bytes from vc-in-f103.1e100.net (74.125.131.103): icmp_req=2 ttl=45 time=997 ms
64 bytes from vc-in-f103.1e100.net (74.125.131.103): icmp_req=3 ttl=45 time=999 ms

--- www.google.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2998ms
rtt min/avg/max/mdev = 338.407/778.267/999.223/311.030 ms

*

PING www.google.com (74.125.131.103) 56(84) bytes of data.
64 bytes from vc-in-f103.1e100.net (74.125.131.103): icmp_req=1 ttl=45 time=124 ms
64 bytes from vc-in-f103.1e100.net (74.125.131.103): icmp_req=2 ttl=45 time=999 ms
64 bytes from vc-in-f103.1e100.net (74.125.131.103): icmp_req=3 ttl=45 time=256 ms

--- www.google.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2125ms
rtt min/avg/max/mdev = 124.714/460.192/999.616/385.191 ms, pipe 2

[Mountain Man]

Yeah, I finally "fixed" this with a fresh install of Kubuntu 13.04. A fellow on another forum who is very knowledgeable about Linux helped me with some troubleshooting, and we never could figure out exactly what was going on, so I figured it was time for a fresh install.

I've been running the same system for about two years and would just update every time a new version of Kubuntu was released, so I figure something must have gotten out of kilter at some point. Sometimes it's best just to start fresh.