Disk Utility problems on new High Res PB 1.67ghz

Question

http://img171.imageshack.us/img171/3539/diskfailed4yb.jpg
That is a picture of what disk utility does when I try to Verify Disk. I don't know why it does that and google hasn't been kind to me on this one.
I do know its new since the 10.4.3 update because it works off my install DVD without a hitch.

Answer 1

I just ran the 'verify disk' and found a little surprise...
Verifying volume “Main”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Volume Bit Map needs minor repair
Checking volume information.
Main
Error: The underlying task reported failure on exit
1 HFS volume checked
     Volume needs repair
Edit: Ok the 'repair disk' button is greyed out and not letting me select this option. Anybody have suggestions as to how I can repair the volume?
Edit2: Ok, I repaired permissions and ran verify disk again. Looks like it's all good.
Verifying volume “Main”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Main appears to be OK.
Mounting Disk
1 HFS volume checked
     Volume passed verification