This from a WD response to a bad customer review:
"We appreciate your feedback and apologize for any inconvenience you may have experienced with your Western Digital 2 TB Red Drives, as this is not the typical or intended experience with the product. The TLER (Time Limited Error Recovery) feature on Western Digital RAID Edition EIDE and Serial ATA hard drives cannot be disabled. Western Digital manufactures desktop edition hard drives and RAID Edition hard drives. Each type of hard drive is designed to work specifically in either a desktop computer environment or on RAID controllers.
The WD Red Drives are specifically designed and tested for small office and home office, 1-5 bay NAS systems and PCs with RAID. Should you require a desktop drive that does not have any RAID or NAS feature sets inclusive in their specifications, you may want to consider a WD Black or WD Blue drive, which are specifically geared towards standard desktop applications.
That said, the Reds are getting better reviews on NewEgg than the Greens. I've decided to use the Greens for backups since they will run only during the backup (otherwise, they are stored in a padded transport case) and use Blacks for storage inside the computer I'm building (it's running now but I'm still adding parts and setting it up). I bought one to use as my main data drive and cannibalized another one from my XP machine (it has little use on it). The Blacks don't cost that much more than the Reds or Greens, especially since I'll be buying them only every once in a blue moon or so. So I eat mustard sandwiches for a little longer; big deal.