Got
When installing subclipse, I'm getting
Incompatible JavaHL library loaded. 1.6.x or later required.
What should I do to get subclipse properly working ?
The message should have said 1.6.x required. You probably installed SlikSVN 1.7.x. Just install Subclipse 1.8 which is designed for SVN 1.7. It also includes the JavaHL 64-bit binaries now.