I want to download iOS 4.2 beta on my iPad, but I've read on here that some apps don't work. How often will my apps have issues? The 3 apps I use most are TextNow, Pages, and IM+ lite. Has anyone tested any of these? I really want to upgrade because I really want/need some of the iOS 4 features (combined mail, wireless printing, folders, etc) but I want those apps to work for me.