I find that putting the daily standup right after or before lunch, pretty easily fixes this problem (assuming the team eats lunch together) - there's no extra time wasted, as you would have been interrupted anyways.
It's not just the time interruption though, it's the mental interruption of thinking about other parts of the project, business, etc, etc, that a stand up creates.
If I'm in the zone and go to lunch, I'll keep churning on the problem in my head, and might even have a solution when I'm back at keyboard.
If I have a meeting before or after lunch, that context is gone
