Nokia Lumia 900 Challenge: Day 16

I'm 16 days in, and for the most part, I'm still enjoying the Nokia Lumia 900.  Reception and battery life continue to be good, and the phone can definitely take a beating thanks to the polycarbonate shell.  But I've found the "multitasking" features to be pretty useless.  All too often, I'll be composing a text message, and have to stop to check a calendar event or something of that nature.  When I come back to the message, the text in the box is gone - or so it seems.  You CAN return to it by hitting the back button several times (or by holding the back button), though I find that to be counterintuitive, particularly for those of us that are constantly flipping back and forth between things.