triple boot + data partition (NEED HELP!)

[[HuCk DuCk]]

I've been tinkering for over a week to try and get a functioning triple boot + shared data working. i've hit a road block. i'm using reFIt with SnowLeopard/W7/10.10. i can't get into ubuntu


*** Report for internal hard disk ***

Current GPT partition table:
# Start LBA End LBA Type
1 40 409639 EFI System (FAT)
2 409640 390772495 Mac OS X HFS+
3 391034640 781659639 Basic Data
4 781922304 879577087 Basic Data
5 879579136 976773119 Basic Data

Current MBR partition table:
# A Start LBA End LBA Type
1 1 409639 ee EFI Protective
2 409640 390772495 af Mac OS X HFS+
3 391034640 781659639 0c FAT32 (LBA)
4 * 781922304 879577087 07 NTFS/HPFS

MBR contents:
Boot Code: Unknown, but bootable

Partition at LBA 40:
Boot Code: None (Non-system disk message)
File System: FAT32
Listed in GPT as partition 1, type EFI System (FAT)

Partition at LBA 409640:
Boot Code: None
File System: HFS Extended (HFS+)
Listed in GPT as partition 2, type Mac OS X HFS+
Listed in MBR as partition 2, type af Mac OS X HFS+

Partition at LBA 391034640:
Boot Code: None (Non-system disk message)
File System: FAT32
Listed in GPT as partition 3, type Basic Data
Listed in MBR as partition 3, type 0c FAT32 (LBA)

Partition at LBA 781922304:
Boot Code: Windows BOOTMGR (Vista)
File System: NTFS
Listed in GPT as partition 4, type Basic Data
Listed in MBR as partition 4, type 07 NTFS/HPFS, active

Partition at LBA 879579136:
Boot Code: GRUB
File System: ext3
Listed in GPT as partition 5, type Basic Data


OSX and Windows are fine. but whenever i select linux, it boots directly into windows. i'm hoping i don't need to install GRUB2 to the windows partition as that would defeat the purpose of reFIt (would it not?)