On 21st Feb 2012 I bought a Samsung Galaxy Ace GT-S5830i and I also got a sd card of 2gb with handset. after using a month suddenly handset stop reading sd card. It started showing blank sd card or unsupported file system. I tried every possible way to read and after that i tried to format sd card from handset and laptop but nothing had happened. So i visited to Samsung Service Center on 12th April 2012 in Gurgaon (near delhi ggn road near Raj Cinema), They said they have to upgrade the software and will replace the sd card and it will work fine. they did that. It was working fine till yesterday 16th april 2012. Yesterday I was on call in evening time, when i got over and saw my cell, again it started showing the same problem....blank sd or unsupported file system. What is the permanent solution. What should i do. I dint buy this handset to get panic again and again.