lua_close() locks but never unlocks... ?

[Chris <coderight@...>]

I'm running threaded code and have defined the lua_Lock
functions.  Each thread has it's own lua_State created via
lua_open and there is one global lock that they all use for
synchronization.  The problem is that when one thread exits the
state is closed with lua_close.  After that all the threads freeze
solid because it looks like lua_close calls lua_Lock but never unlocks.

Is this normal or what?

-- 
// Chris