For some reason on these days i've noticed that my internet speed seems to go faster when i'm on my windows partition (shame on me i know xD) when i go back to my linux pages take too much time to load, which doesn't happen in windows, i have never had this problem before/
HELP!!

Have you verified this or is it still at the "seems like" stage?

You can try http://www.speedtest.net/. Judging from their home page, they look to be international. I cannot vouch that theirs results are accurate--they seemed to be awfully fast when I used them--but they should be find for comparison purposes.

Also, it might be a good idea to test in multiple browsers on both Windows and Linux.

I haven't used a Windows computer in months (because I don't have to!), but I've found different browsers can seem to load at different speeds even on the same OS and the same browser (e.g., Opera or Firefox) can seem to load at different speeds on different OS's.

How are you testing it? Try dsl speed test sites? Can you download large files and use time not speed results?

It is also easy to say that your linux is somewhat to way slower. Many reasons exist. Start also with system monitoring. See cpu load to help decide how much processing is being used for the nic.

i´ve passed the tests in both of them and i get the same result, but the loading time is always longer in linux, when i open my browser (doesn´t matter which one) it takes a long a time to load the home page, whle in windows it loads immediately, the home page is google.
what can i do?

Google Chrome is supposed to be famouslyfast. I haven't seen a huge difference, but I haven't run the linux binaries for it either.

I'm not an expert on this, but maybe it's an issue with address resolution.

Here's another test you can do that might help:
ping someone (like Google.com). Preferably, do this right after a clean boot (before opening Firefox/IE/anything else).

Do the following in the Terminal/Command Prompt/shell. All Linux distributions should have one, as well as Windows (under "Accessories" or "Accessories->System Tools").

On both OSes, run "ping google.com" (use the same site for each). If I remember correctly, Windows's ping stops after 4 packets. On Linux, after a few pings, hit "Ctrl-C" to stop it.

Try and see how long it takes it to resolve the address, although that's not quantitative. Copy (you'll have to use right-click, not Ctrl-C) and paste the output here for each OS.

I hope this helps.

If you test the dsl speeds tests and they are the same then we can suspect that the issue is your browser or as crosstalk suggests a resolution issue.

I'd look at cpu loads and other loads still on the page loading.

I'd get a good hosts file too, in case it is all the cruft on pages trying to sell you out.