Is there a program that can possibly set different profiles for meetings and classes where it will switch to either silent, vibrate, etc... when the specific calendar event is taking place, then switch back after the event

on the 7100 devices it is just one button to switch profiles.

Not at this time.

That is an excellent idea! I am regularly forgetting to return to the normal mode after setting the device to the quiet mode for a meeting. Then I miss important phone calls or messages. A third party or built-in program to address this would be very useful.

It's come up several times in the past. No one has come up with a program, unfortunately.

Even the Sidekick has this feature.