Prevent Duplicate items in Launchpad from mounted partition I have a MacBook Pro with Snow Leopard. I partitioned the HD, installed Lion on the new partition and used Migration Assistant to copy settings and Applications.

I now have duplicates for most Applications, many seem to point to the Snow Leopard Applications.

I can't find a way to easily identify which apps are Snow Leopard so I can delete them.

The alternative would be to trash the Launchpad db, but how do I prevent Lion from recreating the Snow Leopard items?
What if you ejected the Snow Leopard partition and then looked to see which apps disappeared from Launchpad? Would that be helpful?