Wirelessly posted (iPhone 3G (16GB, 2.0.2 JB'd): Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_0_2 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5C1 Safari/525.20)
Not that I would encourage you to do this, but you are aware that installing too many apps can cause the iPhone to freeze up, requiring a restore (just search the forums for "ALoD"), right?
I'm sure Apple would replace the phone if it were constantly locking up. Of course, since 2.1 is rumored to have fixed the problem, any exchange would have to be done soon.
Again, not that I would encourage you to do this.