While that may be a quick-fix or a solution that's inevitable sometimes, I really prefer to NOT suggest that as the first course of action. By simply re-flashing, you learn nothing and wind up repeating the same mistakes. Eventually you just get frustrated with having to reflash all the time and look for an "easier" gadget.

That type of "if it stops working, get a new one" attitude is what's lead to the iPhonization of the culture (especially in the US). Much better to at least try to learn what's going on than just start from scratch ever time something goes slightly awry.