Slow connection speed on my computer but fast connection speed for other computers.

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22 Feb 2011
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98
My desktop has a slow connection speed whilst everything else connected to the modem runs perfectly. Our household is on PlusNet fibre and after some tests we found a nice average of 40MB/s down and 13MB/s up. The laptop, mobile phone and my friend's devices have all correlated with those speeds and it's even more evident when downloading/buffering online content. However my desktop is nowhere near those rates, getting anywhere from 1MB/s to 6MB/s down - effectively 10% of what I should be getting - and roughly 0.3MB/s up.

As an example, here is a test from yesterday morning:
http://www.speedtest.net/my-result/2839881488

Here is one from this morning:
http://www.speedtest.net/my-result/2841979923

My browsing experience is also very odd, which I can only assume is to do with the connection problems. Sometimes I will open a link and it will be stuck "loading" for a couple of minutes, even though I can open up another tab and do things whilst waiting. Video streaming (namely YouTube) has also been acting up a lot, such as it refusing to buffer all the way or it not playing anything several minutes after opening the link. I'm hoping this is tied in with the main issue so I can kill two birds with one stone, so to speak.

The laptop and mobile phone work on WiFi but I have also wired the laptop up and it's still fine, meaning it's not the cable or the router at fault. After many suggestions I have tried the following to no avail:

* Talking with PlusNet for 2 weeks (lovely customer service and a lot of testing but they couldn't find a fault on their end and don't know what else to do).
* Replacing the router.
* Replacing the cables that connect from the modem to the computer.
* Replacing the cables that connect from the router to the modem.
* Using a different port on the back of the modem.
* Changing router ports and settings.
* Turning off firewalls.
* Updating the network driver.
* Updating the BIOS.
* Some other things that I cannot remember exactly.

A friend of mine that's in-the-know with computers has suggested buying a new network card but he's not certain it will fix the problem. He fears that if it doesn't work then it could be a problem with the PCI express bus, meaning a brand new motherboard and even more frustration.

Before I start spending money and replacing hardware is there anything else I could try or that you guys could suggest I do? I'm clutching at straws and losing faith!
 
To make a long-story short I haven't been able to do anything about this until today, hence the delayed response.

I have downloaded the 13.04 version of Ubuntu on a USB drive and booted from it. Some white text on a black background came and went and I was left with the Ubuntu loading screen. I thought it was going smoothly until another black screen with white text showed up and it froze. The caps and scroll-lock lights on my keyboard were flashing at a constant rate and the last line of the text read "Panic occurred, switching back to text console".

I did a quick google search but all I could find were details on how this is a common bug with netbooks; something I am not using. Plus the official forums are down due to a security breach making solution hunting a little tougher. At the moment I am stuck and cannot progress any further.
 
Have you tried updating or replacing the drivers, fully uninstall and get new ones from network card or motherboard manufacturer.

I have to say though that 1.7Gb down is quite fast ;-)

Andi.


Downloaded and tried 12.04, got it working.

Speed test when using Ubuntu: 40Gb down and 13Gb up.
http://www.speedtest.net/my-result/2859650884

Speed test when using Windows (4 minutes later): 1.7Gb down and 0.3Gb up.
http://www.speedtest.net/my-result/2859659003

I assume this means the hardware is not at fault!
 
Have you tried updating or replacing the drivers, fully uninstall and get new ones from network card or motherboard manufacturer.

I have to say though that 1.7Gb down is quite fast ;-)

Andi.

Woops, corrected!

I've updated drivers directly from the manufacturer's websites to no avail. I've even deleted the network card one and rebooted the system so Windows could automatically find the appropriate driver but nothing different there.
 
Misbehaving anti-virus and other security software can slow things down.

Booting into network only safe mode can be a useful diagnostic step. If that helps start enabling things until you find the problem.

In this situation I'd seriously reconsider reinstalling from scratch, or restore from a backup taken back when things were okay. You can waste a lot of time trying to track-down the cause of these sort of issues.
 
Misbehaving anti-virus and other security software can slow things down.

Booting into network only safe mode can be a useful diagnostic step. If that helps start enabling things until you find the problem.

In this situation I'd seriously reconsider reinstalling from scratch, or restore from a backup taken back when things were okay. You can waste a lot of time trying to track-down the cause of these sort of issues.

Safe mode mirrors the same results as Ubuntu. Back on the regular mode I completely un-installed the anti-virus (Avast!) to make sure it wasn't interfering as I heard stopping the process won't actually pause everything. Nothing improved so I installed it again. I also opened up msconfig and un-ticked some of the start-up programmes, rebooted and tried again. Still nothing. I was going to take the rinse-and-repeat route of ending processes with task manager and running a speed test after each one but it's a wall of things I do not understand and wouldn't know where to begin. Aside from that I don't know what else I should be looking out for.

I imagine a lot of people say the clichéd "I don't want to re-install my OS because of what I have on here" and I'm no different: I have some programmes which I'd have to re-pay for if I were to do a fresh install and the companies offer no transfer or deactivation codes unlike Adobe. I'm also fairly sure (though not 100%) that I had done a re-install of Windows whilst this problem was happening with my old ISP of TalkTalk as I had purchased a new motherboard and SSD for the OS.
 
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