Well, I upgraded to dasBlog 1.5. I haven't had a ton of time to look around at what is new, but the first thing I saw was that the admin bar along the top is now in an unordered list, rather than the way it was. Also, the activity links have been separated out. I don't think I like it too much. I started fooling around with the server control (adminNavBar.ascx), but I haven't found the way that I really like it, yet. I was thinking of having it just be spans, then you could format it through CSS. Also, the activity links (referrers, click-through, etc.) have been separated into a submenu of Activity. Hmmm... Not sure I like that, either. We'll see.
In any case, the one gotcha that I ran into is with regards to the web.config. In the upgrade instructions, Omar mentions to not copy the web.config file, but just in passing. Silly me, I copied the web.config and ended up losing the link to my theme, plus crashing the whole site. So, if you are upgrading, let this be a lesson, DON'T COPY YOUR WEB.CONFIG file!