Ipod nano 3rd generation 8gb hang when connect to... My Ipod nano 3rd generation 8gb hang when

Question

My Ipod nano 3rd generation 8gb hang when connect to the computer.Neither did i drop it nor my files are corrupted. After i reset it, itworks fine. But after a few days, i tried it again and it hang again.The problem is i dont buy a ipod to reset it right. Any advice? Shouldi bring it to back to my retailer to check it? Thanks