Merlin Mann is brutally realistic about this: -
The only way that I will be able to tell if you thought something was 'high priority' was that you finished it. If it's not done it's not really a priorityWhen a client tells me something's 'high priority' mostly she's just making nice. I'm not saying that she's lying, but rather there's a misuse of the phrase. What she actually means is that there's an inclination within the company to get a project up but that inclination hasn't yet been matched with the necessary will. It does me no good whatsoever to call her on it; she is still the client. Instead I smile and put a note in the diary to follow up with her in a month or so. If she indicates commitment with action in the mean time then I'm ready to respond immediately.
The other client demonstrated what 'high priority' actually looks like: upcoming meetings diarised, purchase orders generated and a timeline for senior management sign-off. The actual phrase 'high priority' didn't rate a mention.