I bought a new iPhone 4S Friday night to replace my trusty, but failing, 2G and I really like it. Works with my home 3G Micro Cell great and all the old apps came over. My question is this, how is Siri working on other's 4S iPhones? Various functions work well one time and not at all the next time. Is Siri a beta or maybe just not ready for prime time? I think the concept is great, it just seems the first pass is a little rough. Anyone else having the same issues?