Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Has a mind of its own after a year

Garmin StreetPilot c340 3.5-Inch Portable GPS NavigatorI bought this for $350 in Jan 2007 and was delighted with it at first, It's very user-friendly and intuitive. But then the battery died and I discovered that the car charger is defective and doesn't work. So, I have to charge it using my PC. Okay, I've adapted. Then, I swear moments after the one year warranty ran out, the gps went wacko. I would hit the button for a common destination and get the screen for all the gas stations in the area. I tried over and over and couldn't navigate the navigation system. Some crazy robot brain had taken over. Oh, I'm sure that I can spend some major bucks to download an upgrade for it. Why can't it work right in the first place?