Hi all, I have 2, 111 Gb WD Raptors and a maxtor in my box. I have had the Raptors for about a year. Recently, Windows Event Viewer has informed me that one of the Raptors has a bad block. My first thought was to return the disk under warranty. That particular HD, however, only had a couple of backups and was hardly used. So a bad block was totally unexpected. Dskchk revealed no problems as did Norton Disk Doctor. I have used three 3rd Party disk monitors and all three tell me no problems. Has anyone else had the same experience with Microsoft Event Viewer? Also, has anyone got futher ideas to check this disk?