I am having some issues in my app since the advent of iOS 5, and I am trying to figure out what in the world is going on. One of the noticeable differences in the development environment is the switch to the Apple LLVM 3.0 as the default compiler (correct me if I am wrong), and so I'm thinking that if I switch that back to LLVM GCC 4.2, that it may help.
Will that open up any other compatibility issues? What are the ramifications of switching compiler versions?