It's insane to use the Trac package provided by the VisualSVN team, because your are stuck with the Subversion Python Bindings 1.5.2 ! And if you upgrade your repositories with VisualSVN Server 1.7 to use SVN 1.6 FSFS, this old bindings will not work anymore with them.
You have to build the 1.6 bindings by yourself with VS2005/2008 and update your python installation, because the official distribution of the Windows binaries for apache 2.2 on Tigris website will not work with VisualSVN Server. (cf. VisualSVN Server 1.6.2 Released thread the explanation).
