Was experiencing a problem after installing the modded 2.1 image to my Droid where I couldn't get any of my COPY PROTECTED paid apps to show up in marketplace. Tried a bunch of different things to make it work, and then resorted to Google. I ended up coming across a post from early this morning in the original alldroid.org thread on the ROM.
Turns out, copy protected apps simply won't show up until this rom revision makes it onto Google's whitelist. Since it's currently a prerelease ROM, it's not there. And thus, the apps will not show up.
So if anyone is using a copy protected app (ex. Touchdown) my recommendation would be to hold off on updating until a but further along in the game. Unfortunately, it seems like most app backup solutions will not back up copy protected APKs (marked 'private' in Astro)