Every time I typed “im” the iPhone would auto-correct it to “IM”, rather than “I’m” which is what I meant. I finally figured out that the problem was in my contacts. No, not my corrective lenses; the issue was with my address book, of all things.
iPhone OS 3.1
How iPhone OS 3.1 Locked Some Out Of Exchange, And How To Fix It
Is your non-3GS iPhone locked out of your Exchange 2007 ActiveSync server after upgrading to iPhone OS 3.1? It’s a feature, not a bug! Here’s how to get older iPhones up and running with Exchange Server 2007 SP1!