Hi,
I have Sweden tre bredband, after long hard struggle with e220 heawei modem in Linux the connection was established, but I was very surprised when found extremely low connection speed. Connection speed test on www.speedtes.net shows that I have have 1-1.5 mbit connection, but internet surfing shows the opposite. Looks like DNS searching works very slow.
"Looking up servername" in firefox (in status bar) takes almost all site entering time, but content downloading seems to be reasonable.
I have two DNS servers in my resolve.conf :
80.521.192.244
80.521.192.245
Had some one analogous problem? Or have any one an idea of how to fix this and make my internet as fast as possible?
Thanks.

Have you tried using other DNS servers?

No, I can't find them. I'm calling to my provider, but they tell me, that they do not know their DNS IP's , I've found this two in Internet.

Try disabling IPV6 in firefox:

Enter about:config In the address bar. Press Return.
Search for IPv6
Set network.dns.disableIPv6 to true
Close the window.

Restart firefox.

Could try the OpenDNS servers 208.67.222.222 and 208.67.220.220. Beware though they don't fully comply with DNS specs (redirection) but for testing it should be OK. In fact you could use any DNS servers of ISP's nearby as long as they allow access and respond quickly. The IP addresses you posted can't be right. They don't resolve. If you tell us who your ISP is we should be able to retrieve DNS IP addresses.


Nice idea. Never had any probs with Firefox and IPv6 enabled myself though?

521?? Those aren't even valid ip addresses!

My ISP is tre (www.tre.se).

Heh, then you just got the second octet wrong: your ISP's DNS servers are 80.251.192.244 and 80.251.192.245.

Sorry, 521 was misprint, i have 251 of course. It seems that internet goes better even looking up became faster, may be there was some problems on the line or something.
Thanks for every one.

As a bit of a side configuration with FF.

You can also change
network.http.pipelining = True
network.http.pipelining.maxrequests = 10 ( default = 4 )

I have only recently found out about these settings and my browser seems to work a bit better.

You could also have a MTU problem , what is the MTU for your modem and for you stysem ?

Run the command ipconfig and check the MTU of eth0,

For your modem it should be less than 1500 , usually 1492 and for you system around 1462

ifconfig I suppose? I have no eth0 it's ppp connection and I have only ppp0 . My MTU is 1500