I had some trouble with this (updated my Eclipse for my p300 development), however this works for me on 10.4.x:
- Install the CollabNet SVN package from http://www.collab.net/downloads/community/
- Install Eclipse Ganymede
- In Eclipse, in Help -> Software Updates -> Add Site http://subclipse.tigris.org/update_1.4.x
- Check the latest Version of Subclipse and JavaHL and have it installed
- Restart Eclipse.. and you don’t get “unable to load default SVN client” anymore
The svn binaries are now in /opt/subversion, so maybe you also have to adapt your PATH variable in $HOME/.profile
