I would like to point out to guys on this list who may be looking for the svn-bisect tool (just like I was) that it is being included in the next release of Debian [1] and in the backported version of Debian [2].
Also see [3] if you are using a Linux distribution that does not include the svn-bisect by default. [1] http://packages.debian.org/squeeze/subversion-tools [2] http://packages.debian.org/lenny-backports/subversion-tools [3] http://search.cpan.org/~infinoid/App-SVN-Bisect-1.1/bin/svn-bisect