Seagate hard drives error count

My brand-spanking new Seagate Barracuda 7200.9 and 7200.10 hard-drives are giving me grief with smartmontools:

Jul 24 21:30:05 chef smartd[2627]: Device: /dev/hda, SMART Prefailure Attribute: 1 Raw_Read_Error_Rate changed from 107 to 106
Jul 24 21:30:05 chef smartd[2627]: Device: /dev/hda, SMART Usage Attribute: 195 Hardware_ECC_Recovered changed from 58 to 59
Jul 24 21:30:06 chef smartd[2627]: Device: /dev/hdc, SMART Prefailure Attribute: 1 Raw_Read_Error_Rate changed from 111 to 106
Jul 24 21:30:06 chef smartd[2627]: Device: /dev/hdc, SMART Usage Attribute: 190 Unknown_Attribute changed from 66 to 67
Jul 24 21:30:06 chef smartd[2627]: Device: /dev/hdc, SMART Usage Attribute: 195 Hardware_ECC_Recovered changed from 66 to 64

oooh, I don't like the sight of this. smartctl -a /dev/hda shows millions of sector errors and ECC recovered entries. However, these drives are brand-new and shouldn't be showing such problems. What is going on? After some searching, it turns out that apparently Seagate is exporting any weak reads in the SMART attribute that other manufacturers only report unrecoverable errors with.

Ars Technica has a fairly good explanation in the forums.

That makes me less jittery, but I'll add monitoring for the Unrecoverable_Sectors attribute...