I upgraded my personal blog site (where all this same content is cross posted) with DasBlog 2.0.7 in about 10 minutes flat. It was super easy. I spent the next 30 minutes verifying things worked still.
Update: Weird. Cross posting works fine. Something is has definitely gone awry.
Unfortunately I can't log in now, but I CAN log in from Windows Live Writer. I must have something mucked up in the web.config or security configuration. Gotta go figure that out this weekend. Until then, live writer it is.