I just purchased Phone Agent v. 1.2.3 to back-up my phonebook and for sending out multiple SMS. I was able to successfully back-up my phonebook (462 entries, 567 numbers total) with Phone Agent. After making some minor editing on the entries, I saved and attempted to upload the phonebook entries back into my phone. Didn't work. Got the error message saying that a maximum of 510 numbers can only be uploaded into my K750i from Phone Agent. (incorrect since I know you can have about 500 entries each with 4 numbers). Anybody else here experienced the same problem?