I'm currently freelancing on a project, and my supervisor has time management issues. He doesn't respect other people's time - or at least doesn't respect the time I reserved with him.
Examples include: extended side conversations during meetings, leaving meetings early to discuss a topic with another co-worker, leaving meetings during meetings to have a conversation with another co-worker, taking phone calls from his spouse during meetings, responding to unrelated emails during meetings, not coming to meetings on time.
Aside from being disrespectful, is that by not paying attention during meetings or leaving during a meeting, the conversation gets side-tracked. He either misses decisions, questions or points raised during the meeting (then asks for changes later), or decisions are not resolved. However, I don't believe he's on a power-trip. He's just not aware that his behavior causes problems.
A friend of mine said to manage up, but I'm not really sure how to do that.