[boost] [signals] trackable not disconnecting

I have been experiencing some strange behaviour (on Solaris 2.9 intel) with the signals::trackable object. I'm using it on all my objects that connect to signals and it doesn't seem to disconnect the signals consistently on destroyed objects (these objects are publicly and virtually derived from trackable). I've worked around the problem by manually disconnecting from all signals in the objects destructors. I'm having a very hard time making a small example program to demonstrate this behaviour (but I am working on it :). In the meantime if anyone else has experienced this kind of behaviour or has any information that might help, it would be greatly appreciated. TIA Neal