ben, jw.., et al
I talked with one of Gene's minions today. She says they're pretty swamped with apps. She says she tries to get a "we got your app" e-mail out within a day or two of receipt, but sorting through the received apps and inviting guys in for interviews is in the neighborhood of 2 to 4 weeks.
I'd say if you sent in an app, but haven't had any acknowledgment in a week, drop an email to see if it arrived safely.