Question: I have an external SD memory card inserted in my GT-S5360 device but I am seeing a message that says "SD Card removed unexpectedly" displayed in the Status Bar (or Notification Bar). What should I do?
Answer: Please upgrade the software in your device via Kies update tool to latest version of the software.
Advice about Update the firmware of your device can be found in the Kies Help guide:
1. Go to Help > Kies Help
2. Go to Connected Devices > Managing the Firmware of a device
3. You can update your device from there.
Basically, the SD Card Removed Unexpectedly error was caused by a dated firmware.