Something's wrong with my camera?

I have a Nikon d5000 I have used it for'' about 2 years now. I never had any problems but today when I was trying to record video it kept stopping in the middle and say recording terminated. Then it would not let me record too I put the memory card back n out. Also i format. The memory card

DSLR cameras auto stop recording once the file size reaches 4 GB, usually at about 10 minutes. It will also stop recording if the sensor gets too hot. This is normal.apparently you have never tried to record for this long before.