8.1 Pre-release gpart, isn't setting type correctly

[Phil]

Performing the following gpart commands on either a hard disk or 
usb memory stick doesn't correctly store the gpart type information.

What we're doing, using FreeBSD 8.1-PRERELEASE, csuped as at 
30-May-2010 23:59 UTC (*default date=2010.05.30.23.59.59)

# gpart create -s GPT da1
# gpart add -s 1G -t freebsd-ufs da1
# gpart show da1

=>     34  7827325  da1  GPT  (3.7G)
       34  2097152    1  !00000000-0000-0000-0000-000000000000  (1.0G)
  2097186  5730173       - free -  (2.7G)

Expected to see something like:
       34  2097152    1  freebsd-ufs  (1.0G)

# gpart list da1
Geom name: da1
fwheads: 255
fwsectors: 63
last: 7827358
first: 34
entries: 128
scheme: GPT
Providers:
1. Name: da1p1
   Mediasize: 1073741824 (1.0G)
   Sectorsize: 512
   Mode: r0w0e0
   rawtype: 00000000-0000-0000-0000-000000000000
   label: (null)
   length: 1073741824
   offset: 17408
   type: !00000000-0000-0000-0000-000000000000
   index: 1
   end: 2097185
   start: 34
Consumers:
1. Name: da1
   Mediasize: 4007624704 (3.7G)
   Sectorsize: 512
   Mode: r0w0e0

If I reboot the machine, only the /dev/da1 devices is recognised, there is 
no /dev/da1p1.  Also "gpart modify -i 1 -t freebsd-ufs da1" did not have 
any effect on the "gpart list"

We have a similar outcome when using the HDD, 
=>       34  976773101  ada0  GPT  (466G)
         34        128     1  !00000000-0000-0000-0000-000000000000  (64K)
        162    8388608     2  !00000000-0000-0000-0000-000000000000  (4.0G)
    8388770    4194304     3  !00000000-0000-0000-0000-000000000000  (2.0G)
   12583074   25165824     4  !00000000-0000-0000-0000-000000000000  (12G)
   37748898   33554432     5  !00000000-0000-0000-0000-000000000000  (16G)
   71303330       4096     6  !00000000-0000-0000-0000-000000000000  (2.0M)
   71307426   10485760     7  !00000000-0000-0000-0000-000000000000  (5.0G)
   81793186   33554432     8  !00000000-0000-0000-0000-000000000000  (16G)
  115347618  566231040     9  !00000000-0000-0000-0000-000000000000  (270G)
  681578658      16384    10  !00000000-0000-0000-0000-000000000000  (8.0M)
  681595042    4194304    11  !00000000-0000-0000-0000-000000000000  (2.0G)
  685789346  290983789    12  !00000000-0000-0000-0000-000000000000  (139G)

Hardware: Used two different motherboards: Gigabyte (without ahci available)
and 
VIA SN1800 (with ahci available and enabled); two hard disks (WD500AAKS)and
one 
usb memory stick.

Initially I thought it was the ahci timeouts, but using different
motherboards, 
and a usb drive disproved that association.

If there is anything that I can do, or provide to help resolve this, I'm
happy 
to do so.

Regards, Phil
Sydney Australia (GMT+10 hours)