Here's another good one. MacPorts doesn't detect Xcode 4.3 so no zlib (for Wine) until you run sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer
Apparently you're supposed to enter it without the trailing slash (seems to work for me).
Have you tried Homebrew? It's the first package manager for Mac OS X that I actually like:
I found it didn't work any more or less often than Macports (so maybe 50% of the time?) only there seemed (when I used it) to be less community support should something actually not work. Though that's just my experience.
I've had this problem in both Snow Leopard and now Lion, but with Keynote. The instructions provided for iTunes, modified for Keynote, don't work (in Terminal I'm just getting ">" without results).
Okay, Packagemaker 3.0.4 seems to have pooched my installer. Run the installer and the application isn't installed to Applications it just vanishes, but the installer says it's succeeded. Nothing was changed from the previous version, all I've done was update to lion, run the packagemaker program to check for errors and build a new package. Poof, broken. I'm so frustrated I've never been so close to inflicting violence against my computer... I don't even know where to start looking for the issue.