Omar Shahine, who took the role of the "Program Manager" for dasBlog 1.6 added a new macro feature (I am actually not really sure who added it; someone correct me if I am wrong; at least Omar OK'd the feature) that totally rocks and put us on par with MovableType in terms of easy access to older entries:
The macro creates a list of links for all months that have blog entries and if you look at my site (not at the RSS feed), you'll see it on the left-hand side of the page just under the "What's News" section. Thanks! Now I can find my old stuff again. ;-)
if you haven't see it already; Omar's comments about the 1.6 drop and links to release notes and binaries/source are on his blog.