How many apps have you got on your iPhone 3G?

I'm just curious to know how many pages worth of applications some people have, and conversely, if they believe this is having an adverse effect on their iPhone. I have about 6 pages worth, and appear to be suffering from intermittent crashes. I have to restore the phone quite often, which is a rather laborious task - it takes the best part of 3hrs to do!! Incidentally, I have a 16gb version, with the latest software. Apple have already replaced the phone once for me, and I'm about to get a 2nd replacement, though I'm now wondering whether to go for an entirely different phone. I do love the phone.......when it's working!!! Anyone else having problems with their iPhone, or am I just dreadfully unlucky?