I just sent my 770 back to Nokia for repair the second time. The first time I got a WSOD, this time the zoom in key has no response. Before I sent my lovely 770 back, it ran very well with 2006OS on MMC and 2007HE on flash. Most of the programs for 2006OS ran well on it and I didn't have a crash for a long time after a lot of tune up, and I was happy with it. Then one day,the zoom in key stopped working. After watching a few movies on it, I decided to send it back for repair since I couldn't turn up the volume. Luckily my770 is still under waranty. I heard someone got a N800 as a replacement because they don't have anymore 770. But even they send me back a 770, I am happy. Bottle line, 770 is a good machine after a lot of tune up, not great. You just don't know how long it will last.