#1 os count for setting default OS wrong

[Adriaan Penning]

When using startupmanager as supplied with Ubuntu 11.10 32-bit for changing the default OS to Windows XP on an Asus EEE PC 1005PX, the wrong OS is booted.

The 6th OS is XP, but Grub2 expects the number to be 5. So, Grub2 seems te be starting at 0 when counting the OS entries. Startupmanager seems te be starting at 1.

Changing the number to 5 manually and doing a update-grub fixes the problem