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I am having a very strange issue with my system, I have a 2Mbps connection and everything was fine until one week back. I connect using a wireless, from same spot always.

My internet started to become very slow one day, speeds not exceeding 10-30 kbps.

At times I get good speed for a long period and relapse to the slow trend.

First I disabled IPv6 as explained online in asimilar case.

Still had no luck.

So I connected another wireless card to see if my wireless card was the problem and found out that net was slow on it too.

Then I replaced Network-Manager with wicd, but still am having the same speed.

  • Ping works perfect without much lag or loss of packets
  • When browsing the Sent and Received graphs flat-lines with just locational peaks (max 10-20kbps)
  • Works in full speed on other systems on WLAN
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You tried other systems with LAN and this system only with Wifi. Why don't you try to connect this computer through LAN? Maybe is only an interference problem or a channel conflict and not a Ubuntu problem. –  Leo Jun 8 '13 at 21:08
no, all i tried with wifi. i ,mean WLAN –  user157750 Jun 8 '13 at 21:17
And did you try with with a LiveCD/USB with Ubuntu 12.04.2 and 13.04? Which wireless card do you have? –  Leo Jun 8 '13 at 21:28
I have a broadcom card, which i replaced with belkin and tried. Used 10.04 live cd to test 12.04 too –  user157750 Jun 8 '13 at 21:46
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