NV+ hanging up every 7 days

Just an update. Things are not any better, the replacement drive over the week was up to over 250 reallocated sectors! I pull the new drive and ran seatools on it and the drive checked out OK!? I left the drive out of the array it and ran all week OK. That is until 6 AM on Sunday. Down it went again right on schedule. So I ordered two new exact matches of the original drives. The NAS would not even recognize the new drive (which I also checked with sea tools before installing). On Friday I ended powering the nas down and booting with the reset button pushed in. It came back up and did see the drive and successfully synced it. Things were humming along again until today at 6 AM when it was locked up again. Upon restarting I got a message that it had to resync volume C again. It resynced and has been running OK again but in another week I'm sure it's going to go down yet again. When I did the reset, I had to change the IP address and password on the nas, it said it was reinstalling the firmware or something like that on the display, but the drives and shares were preserved. Was that supposed to be the case? Or is there another level of reset that I can try?

I'm just about out of ideas but I did come up with the idea of running each of the scripts in cron.weekly and seeing if I can determine which one is hanging up things. I can then at least remove the script until I can determine why it's locking up the device. The scripts I see in weekly are: backup_idmap get_rn_messages get_smart quotacheck schedule_update_check.

Any ideas anyone has are more than welcome.

        Date                                         Message 
	Sun Oct 5 15:15:49 EDT 2014	RAID sync finished on volume C. The volume is now fully redundant.
	Sun Oct 5 11:07:27 EDT 2014	System is up.
	Sun Oct 5 11:05:56 EDT 2014	RAID sync started on volume C.
	Sun Oct 5 11:05:33 EDT 2014	Improper shutdown detected. To ensure data integrity, a filesystem check should be performed by rebooting the NAS through Frontview with the volume scan option enabled.
	Fri Oct 3 18:58:33 EDT 2014	RAID sync finished on volume C. The volume is now fully redundant.
	Fri Oct 3 16:27:23 EDT 2014	Successfully changed password. [admin]
	Fri Oct 3 14:48:15 EDT 2014	System is up.
	Fri Oct 3 14:41:48 EDT 2014	Changes to the network is being backgrounded. The browser will automatically refresh in 10 secs.
	Fri Oct 3 14:37:14 EDT 2014	System is up.
	Fri Oct 3 14:35:05 EDT 2014	RAID sync started on volume C.