This is a terrific module and can come in very handy. On the other hand, it is terribly slow. It took half a second to build breadcrumbs on a tree-like structure, three levels deep with around 25 nodes.
It might be faster to translate the data structure to an xml document and use xquery directly. But then again you lose the perl specific filters.
== Update ==
The author spend a tremendous amount of time to fix the performance issue and there is no reason to not give this module a 5 star rating!