Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm having a 10 Mbps LAN connection and it used to work ok, but since yesterday the download speed has been terribly low. I'm getting 266 kbps, BUT the upload speed is great - almost 10 mbps.

I've contacted the ISP and they say there's nothing on their side, so I've tried a bunch of stuff:

  • restarted router, including restarting from the admin panel and powering off for a minute
  • restarted pc
  • connected directly to WAN with a laptop, which was fully formatted a few days ago and now has a 100% clean OS
  • tried to check speed from Windows secure mode
  • checked to see if anyone is stealing Wi-Fi and it doesn't look like that

None of these helped and I'm still at soul tormentingly slow download speed and good upload speed. Please help.

share|improve this question
Ask your ISP whether they use a switch or hub for you connection and what's the uplink bandwidth. You might be competing with others on the same switch/hub. Many consumer ISPs don't have a minimum download bandwidth guarantee though. – Aug 2 '11 at 20:37
What version of Windows? – KCotreau Aug 2 '11 at 21:16

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.