hey... I'm expering the same thing as you are wibben ^^
well, I managed to get kreia back to talk to me.... but not bao-dur, yet, hopefully...
well, what it happenned when I was at dxun, after winning the battle against bralor and by then my main character was levelled up to 16... and if I'm not mistaken, the main char's level is the one that triggerred the conversation between him and kreia,,, but forgive me if I'm wrong...
but there's also another part, that kreia's conversation would take place...
it is when you were about to leave dxun for onderon with mandalore...
she will have a conversation with him...
well I hope it'd help you ^^
oh, and if you guys found a conversation point for bao-dur (just like kreia's) please let me know... post here or please PM me... thanks guys...