If combat becomes necessary, have the players roll initiative and make them wait until their initiative comes up. Avoid discussing administrative issues during the game. Ask prior to starting if anyone has out of character issues, such as spell lists or experience point expenditures and add that if there isn't, the issues won't be discussed again until the next break. If they're taking too long to mull over their action, move on to another player. Come back to the indecisive one later.
Pass notes to the players.
If one decides they want to examine a statue while the others search the room, give the info on the statue only to that player. Make sure your notes are legible and readable at a glance. Innkeeper - Dirty, always busy, moans about the bandit attacks. This way you know how he looks and what he's supposed to impart. You can't deal with the requests of players quickly if you're flipping through your notes for some tidbit of information.