After updating to Mac OSX Lion I find that I m unable to use Subclipse. I keep getting this error:
Unable to load default SVN client
I ran into a similar problem when I tried to re-install subclipse after installing Lion. The subversion client that subclipse uses relies on a javahl bridge which you can normally get as a community release from collab.net. The problem is that the latest version only supports 10.6 and no version yet exists for 10.7.
I solved my need to interface with a subversion repository through eclipse by switching from the subclipse plugin to the subversive plugin which does have a supported bridge. I know this doesn't exactly answer how to get subclipse working but it was an alternative that worked for me and as far as I know might be the only solution until a javahl package supporting 10.7 is available.