Here is an interesting article on how to clear the plugin cache using eclipse -clean on OSX, which as the poster states, is one of the few things more complicated on OSX than on Windoze. Enjoy.
Fulltime at DST Health Solutions since July 2005. Using Java, XML, XSL, Eclipse, J2EE, AspectJ. Have been doing OO since 1985 (Simula 67, Smalltalk 80).