RND4000v1 X-RAID: HDD Master Password?

Hi, sorry to bump an old thread but it's the closest to my own experience.

I have read and intend to try all the suggestions but before I do I just want to check to see if anyone thinks otherwise.

My ReadyNAS NV+ (4 x 500GB HCL listed Seagate drives) experienced a drive failure so after removing it I thought I would give the unit complete reset.

1) I removed the failed drive, recreated the X-Raid array with only the 3 original drives and all was good.
2) I then ran secure delete during which time I experienced a power cut.
3) I rebooted the NAS after power was restored and got the following message on the display:
Booting
Initializing HDs
The Power light was flashing Blue slowly.
The drive lights were flashing at the same time quickly.
The RAIDar console could see the NV+ and showed "Initializing disks".

I then literally had to move house. Powered it down again packed it all up and am now trying again.
Before powering up the NV+ i connected all 3 remaining drives to a PC to check the drives. They all show up as Security Locked with high security in pace. Borked?

On power up the NV+ & 3 drives seem to pick up where they left off.
i.e.
Display reads
Booting
Initializing HDs
The Power light is flashing Blue slowly.
The drive lights a flashing at the same time quickly,
The RAIDar console sees the NV+ and says "Initializing disks"

I can hear the disks being accessed about every second. Sounds like it is secure deleting....maybe.
It has bee like that for almost 24 hours. Is that normal for 500GB drives? Seems like ages to me. Are they stuck in locked mode?

Thanks sqr