Nope. I never got 5 days though. I got 3 or so and now I get at least several days before I have to charge. I cycle'd my battery three times (never let FULLY die) when it was new and now I charge it whenever. I have a charger at work, at home and the BB charges via USB on my mac. The 8800 battery is more than enough for me personally.
Are you using video, music, etc or apps that are always on?
Who's that peekin' in my window?...POW....nobody now.