I've had my Treo since Wednesday. I am having trouble with the battery. It will not keep a charge even if I am not using the device. It has completely run down for the past two days and shut itself off. It is also running hot. I contacted Customer Retention (the department where I got the phone) and they are sending me another one. I did have trouble with BFViewer. Since I had the 650 the program for the 755 would not sync until I deleted the BFViewer in my backup file. That was easy to fix and MyTreo and Quick Tour both work fine now.