My defy will not let me transfer more than about 100 MB before t disconnects from the computer and gives me a delayed write failure. My phone also wont connect for mass storage unless usb debugging is turned off. My phones been rooted, I don't use any task killers and I have a 16 gig memory card that's been through 3 phones and never caused any problems. I've also looked around on other threads and they tell me to try t on a different usb port. I've tried that and it doesn't help. Can anyone give me a definitive answer or should I just deal with it?