Macports broken after upgrading to Mac OS X 10.7 Lion

[Jeremy Lavergne]

> After I upgraded from Mac OS 10.6 Snow Leopard to 10.7 Lion, MacPorts stopped working. Most installation operations would hang the system.
> Getting a Lion-specific .dmg (2.0.3) and installing it did not fix the issue. Now, even trying to do a "sudo port selfupdate" launches some background processes that quickly render the machine unusable. I tracked this to a "xcodebuild -version" call that took 100% CPU, but there might be other reasons. 
> I would appreciate any pointers to what might be causing the issue and how I can get Macports working on my system again.

First question: did you rebuild everything first?
http://trac.macports.org/wiki/Migration