As of January 29th, 2009, the parrot svn repository is now hosted on parrot.org instead of perl.org.
If you have an existing checkout of the original repository, you can easily switch to the new repository with the following command:
svn switch --relocate https://svn.perl.org https://svn.parrot.org
Thanks to the admins at perl.org for all their support.
Developers, when you do the switch, be prepared to authenticate to the repository with your trac id and password.