It definitely seems to me that Safari is crashing much less often after the 1.0.2 update. It could be a coincidence, but I don't think so. Pre-1.0.2 Safari would crash on me literally one out of every three pages I visited, which made it essentially unusable, not to mention embarrassing when demoing it for people. Post-1.0.2 it's only crashed once or twice total, with dozens if not > 100 pages visited. As this was my biggest complaint with the iPhone, I'm very happy, although there's still a lot of things that need fixing, and features that need to be added (ubiquitous horizontal keyboard, notes syncing, multiple calendar category support, true sync with OS X mail including Rules, password keychain and image filtering for Safari, etc.).