With another search on the web.. I have found the answer I was searching on yesterday: Queue with thread.
How? you can read here a good guide.
So anytime the code need to fetch data from the web, there is a good thread who can manage it.
I would like to see a urllib2 library completely asynchronous.. but for now.. you need threads.
Other things I did..a lot of bugfixing and a little bit of code cleaning.
I have also found another bug while displaying data on the chart.
Next step, will be chart improvements... and than..
first alpha will be out!