One, not much, but I've had almost every member of the Nexus line, starting at the Nexus One, and none have performed flawlessly. Not this badly, but they've never really approached the level of polish that I've seen on the iPhone. This one is worse to the point that it's making me seriously consider switching to an iPhone. That said, the grass is always greener, and I'm sure I just don't know the flaws on the other side of the fence.