I am really amazed how many people ignire this and yet it is the first point
you should read when you go to download TBB..
Want Tor to really work?
You need to change some of your habits, as some things won't work exactly as
you are used to.
Use the Tor Browser
a) Tor does not protect all of your computer's Internet traffic when you run
it. Tor only protects your applications that are properly configured to send
their Internet traffic through Tor. To avoid problems with Tor configuration,
we strongly recommend you use the Tor Browser. It is pre-configured to
protect your privacy and anonymity on the web as long as you're browsing with
the Tor Browser itself. Almost any other web browser configuration is likely
to be unsafe to use with Tor.