/usr/portage/eclass/eclipse-ext.eclass is missing "3.2" in known_eclipse_slots current value known_eclipse_slots="2 3 3.1" should be changed to known_eclipse_slots="2 3 3.1 3.2"
Starting with eclipse-sdk-3.2 plugins should be installed using Eclipse update manager because we don't have the time to maintain all the plugins in the tree. We probably haven't gotten the info out this very well but I guess that we should for example make this eclass not able to install plugins for 3.2 at all.
Okay, I'll close it as invalid :)