Just installed Lion. Downloaded the Java runtime.
When I try to open Arduino IDE it says something like "PowerPc apps won't run anymore" (I have a Dutch Mac OSX install so not sure what it says in English).
Tried to reinstall the IDE didn't do the trick.
This is when the Arduino IDE is inside the applications folder. When I drag the Arduino.app (Not an alias!!) to my desktop (or other folder) it runs fine. Indeed go figure????