New Physical Drive in RAID 5 Array on MSA500 Still Expanding After a Week

I installed another 146GB SCSI drive in a 5-disk RAID 5 array to bring the total up to 6 x 146GB drives. I used the Array Configuration Utility 8.0.14.0 to expand the array to include the recently added 6th disk.  This was more than a week ago and it still indicates that it's expanding.  The status message follows:

Status Messages  

# 777 The current array controller is performing capacity expansion, extension, or migration on array A.

Additional expansions, extensions, and migrations are not allowed on this controller until this process is complete. Also, configuration changes to any other array that is waiting for expansion or rebuild are not possible until this process completes. If unused space exists, additional logical drives can be created. Otherwise, most configuration changes are not allowed until this process is complete.

# 785 Background parity initialization is currently queued or in progress on logical drive 1 ( RAID 5 in array A). If background parity initialization is queued, it will start when I/O is performed on the drive. When background parity initialization completes, the performance of the logical drive will improve.  

# 785 Background parity initialization is currently queued or in progress on logical drive 5 ( RAID 5 in array A). If background parity initialization is queued, it will start when I/O is performed on the drive. When background parity initialization completes, the performance of the logical drive will improve.  

As this is taking so long (and HP declined to add more detailed status indicator), I imagine that something has gone wrong.

Is there anyway to resolve this?  Thanks.