I upgraded my braodband to the Jetpack Hotspot MiFi 4510L February of this year--2012. It was working perfectly wonderful at first but a lil over 2 weeks ago this P.O.C. keeps shutting down on it's own. I can be connected to the WiFi for any amount of time but if I walk away and my laptop times out to the screen saver, when I come back I have no internet connection. When I check my device one of 3 things are happening it's on battery full with 3-4 bars and a flashing green light, (2) battery full, 3-4 bars flashing purple light (3) shut off no flashing light. It is completely annoying to have to get up and go reset the modem multiple times a day over and over and over again. I have checked my laptop and it is not a computer issue it's definately a problem with the MiFi. I am thinking maybe it needs an update but im scared it may get worse and of course with updates you can't go backwards if you don't like it. Does anyone else with this device have the same problem? and has anyone updated the device and experienced any problems? Thanks