vidalia README.SBo

Once vidalia is installed then edit the ~/.vidalia/torrc file.
Add the following to torrc or use the torrc file from /etc/tor/torrc.

# Set the Tor Circuit Build time to find faster tor servers, increments of
#  seconds.
CircuitBuildTimeout 2
# connections while Tor is not in use.
KeepalivePeriod 60
# Force Tor to consider whether to build a new circuit every NUM seconds.
NewCircuitPeriod 15
# Set How many entry guards we should we keep at a time.
NumEntryGuards 8

To use vidalia and tor with Firefox then add the FoxyProxy extension
and use the FoxyProxy's Tor Wizard. For extra anonimity in Firefox then try
Torbutton extension and Privoxy.