case sensitivity issue I didn't know about

I was installing unixODBC and I noticed after an uninstall it was leaving files behind even though it was removing itself from the port registry. But I notice that it does remove all files if I uninstall using the case sensitive name. Is that a known issue? I knew about some case sensitivity issues but not one where a command partially works, which is even more confusing than when 'port contents foo' shows nothing after 'port install foo' when foo is a port named "Foo". Mark