GRUB2 doesn't boot OSX Partition after update (solved!)

After repartitioning my MBR formatted, multiboot HD GRUB would not boot my OSX partitions.
My screen only shows "Error: Drive not found Error: file not found".
I manages to boot into the partition with SuperGrub2disk and OSX Boot disks.
By "try and error" I found out that there is something wrong in the OS-Prober script.
The boot loader did try to look for a "sleepimage" file on the partition in the wrong place.
the path in the prober-script was "/var/vm/sleepimage", but the file is located on the OSX partition in "private/var/vm/sleepimage" (OS X 10.6.8).

Changing the path in grub.cfg and under /etc/grub.d/30_os-prober to the above was my answer.

At last, I don't know if the bug does rather affect GRUB2 than os-prober (with finds all my OS correctly), but I hope that someone can change this.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: os-prober 1.51ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic i686
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
CheckboxSubmission: 533c6bf719aa851f11aca7c3f7d76487
CheckboxSystem: 3e53d3ea5811723345f19eff5070f9ab
Date: Tue May 29 23:11:37 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110904)
SourcePackage: os-prober
UpgradeStatus: Upgraded to precise on 2012-03-03 (87 days ago)