I had problems with Subversion 1.5 (used against a 1.4.6 repository). E.g, my process would completely freeze up on doing a "svl log" command.

I reverted to 1.4.6 on the client and all is well again. So - even though Collabnet claims compatability with an uplevel client - I don't believe it.

You can download the 1.4.6 version from this page.

Quoted: CollabNet Consulting Services cover a wide range of business and technology topics designed to accelerate the roll-out and adoption of CollabNet. Services include subversion services, community services, open source consulting, Collaboration and Program Management.