Tor 0.2.1.20 is released

Tor 0.2.1.20 fixes a crash bug when you're accessing many hidden services
at once, prepares for more performance improvements, and fixes a bunch
of smaller bugs.

The Windows and OS X bundles also include a more recent Vidalia, and
switch from Privoxy to Polipo.

The OS X installers are now drag and drop. It's best to un-install
Tor/Vidalia and then install this new bundle, rather than upgrade. If
you want to upgrade, you'll need to update the paths for Tor and Polipo
in the Vidalia Settings window.

https://www.torproject.org/easy-download

Changes in version 0.2.1.20 - 2009-10-15
  o Major bugfixes:
    - Send circuit or stream sendme cells when our window has decreased
      by 100 cells, not when it has decreased by 101 cells. Bug uncovered
      by Karsten when testing the "reduce circuit window" performance
      patch. Bugfix on the 54th commit on Tor -- from July 2002,
      before the release of Tor 0.0.0. This is the new winner of the
      oldest-bug prize.
    - Fix a remotely triggerable memory leak when a consensus document
      contains more than one signature from the same voter. Bugfix on
      0.2.0.3-alpha.
    - Avoid segfault in rare cases when finishing an introduction circuit
      as a client and finding out that we don't have an introduction key
      for it. Fixes bug 1073. Reported by Aaron Swartz.

  o Major features: