[BlueOnyx:02983] RAID resynch every week

[Jeff Folk]

I'm getting concerned... Should I be?

cron.weekly apparently runs a 99-raid-check job every Sunday morning  
at 4:22 AM, and my RAID0+1 array gets md0 and md2 rebuilt every week  
(according to the Active Monitor e-mails)... /var/log/messages looks  
like this every time:

Nov 22 04:22:01 box1 kernel: md: syncing RAID array md0
Nov 22 04:22:01 box1 kernel: md: minimum _guaranteed_ reconstruction  
speed: 35000 KB/sec/disc.
Nov 22 04:22:01 box1 kernel: md: using maximum available idle IO  
bandwidth (but not more than 200000 KB/sec) for reconstruction.
Nov 22 04:22:01 box1 kernel: md: using 128k window, over a total of  
256896 blocks.
Nov 22 04:22:01 box1 kernel: md: delaying resync of md2 until md0 has  
finished resync (they share one or more physical units)
Nov 22 04:22:07 box1 kernel: md: md0: sync done.
Nov 22 04:22:07 box1 kernel: md: syncing RAID array md2
Nov 22 04:22:07 box1 kernel: md: minimum _guaranteed_ reconstruction  
speed: 35000 KB/sec/disc.
Nov 22 04:22:07 box1 kernel: md: using maximum available idle IO  
bandwidth (but not more than 200000 KB/sec) for reconstruction.
Nov 22 04:22:07 box1 kernel: md: using 128k window, over a total of  
312311552 blocks.
Nov 22 04:22:07 box1 kernel: RAID1 conf printout:
Nov 22 04:22:07 box1 kernel:  --- wd:4 rd:4
Nov 22 04:22:07 box1 kernel:  disk 0, wo:0, o:1, dev:sda1
Nov 22 04:22:07 box1 kernel:  disk 1, wo:0, o:1, dev:sdb1
Nov 22 04:22:07 box1 kernel:  disk 2, wo:0, o:1, dev:sdc1
Nov 22 04:22:07 box1 kernel:  disk 3, wo:0, o:1, dev:sdd1

Resynch completes every time, and I never get any other notifications  
of degraded disk integrity. Are there any other historical logs I can  
explore to see what is going on? What should I be looking for??

Many thanks in advance.

Regards;
Jeff Folk