From the reference you sent me, it does seem to be a grub 2 display.
However I am using a CD of PCLinuxOS 2010.12 which has been used many times before and this error has not shown up.
I was trying to create a raid5 array over 3* 500GB sata2 drives when this occured.
It does seem that this error is also included in grub 1, since all I use is PCLinuxOS.
I finally had to boot on a usb stick to get the raid5 array to work.