Hello!
I have written a tool called svneverever [1] to aid conversion of SVN repositories to Git done by on KDE's svn2git [2].
The blog post introducing it in detail is up at <http://blog.hartwork.org/?p=763>.
If you work with svn2git it's worth a check-out for you.
Best,
Sebastian
[1] http://git.goodpoint.de/?p=svneverever.git;a=summary [2] http://gitorious.org/svn2git/svn2git