I can't quite seem to find out what is wrong, but if I use Ubuntu 14.10 or Ubuntu MATE 14.10, I get network speeds around 5Mb/sec. On the same connection, but using Kubuntu 14.10, I don't get more than a tenth of that (i.e., about 500Kb/sec).

Does anyone know what might be going on there? Thanks!

Ubuntu, Mate and Kubuntu same or different machines same network?

If same machine one OS install using different de's or 3 separate OS installs?

how are you testing the speeds?

google01103 wrote:Ubuntu, Mate and Kubuntu same or different machines same network?

If same machine one OS install using different de's or 3 separate OS installs?

how are you testing the speeds?

It's the same machine, installed fresh each time and wiping out everything before it, and using exactly the same network (via wifi).

Thanks for the advice on the speed test. I did a web one in Firefox on KDE and it was fine--the proper speed. It's just that, when I go to download something, it never tops 500Kb/sec, seemingly regardless of the source. It's as if it's being throttled somewhere along the line.

Here's a real-world example: running wget https://dl.google.com/linux/direct/goog ... _amd64.deb in a terminal is lightning fast on non-KDE Ubuntu and doesn't go over 500Kb/sec on Kubuntu.

Could it be that there is throttling? Thanks

I would question that particular "real world test" because servers in a lot of cases doesn't feed at full speed - I dl'ed that file from within my browser and it was 748Kbs (or about 12% of my rated connection)

I think you need to find a better/more consistant server source for testing:
- if you dl that file within FF is the speed ok?
- is the dl speed on that file using wget & Xterm instead of Konsole ok?
- are there any apps that dl that dl at full speed on you current install?

Another important test would be logging in using a different de (there usually a light weight window manager like IceWM available, not sure what Kunubtu uses) this should confirm/deny it as a KDE issue as long as you don't test using any KDE apps (use Xterm or FF)

Thanks, mate, I'll give these a go. I had been just thinking that there was some setting perhaps that was limiting things, but it seems that's not the case.