Reallocated Sector Count

In one of my hard drive there's Reallocated Sector Count "Raw value" 13. It's raised from 2 to 13 about in 4 months. I buyed that drive 11/28/2005. That drive is Seagate Barracuda 80Gt. It's Slave drive and only contains video files.

Also UltraDMA CRC Error Count is 2.

Should i be worried about that drive?

DriveInfo.txt

DriveInfo.txt