I like Tortoise.  However, whilst setting my new machine up, I installed the latest build (last weekend) and it couldn't authenticate- it just sat there.  When I had the opportunity to try and fix things, today, I installed the latest version and whilst it can let me browse and export, I cannot checkout from my repository because instead of treating svn+ssh:// as the protocol it appends a local path to it, and then unsurprisingly says it can't find it.

Downgrading to version 1.4.8 solves this - in case you need to know.

The only bit about this which really leaves me uncomfortable is that the changelog says that the authentication problem was solved in version 1.5.1 - unfortunately the official release is 1.5.0 and the latest nightly build is also still only 1.5.0.  Not sure whether there is a time machine involved or just a typo combined with a mistake - neither of the 1.5.0's work in the way the changelog suggests 1.5.1 should (which is fair, I guess, in a way...)