I guess I'm a bit spoiled. Linux never leaves me hanging when I need to access a filesystem. Anything I throw at it--NTFS, FAT32, HFS+, ext2, ext3, XFS, ZFS.
The other day I was trying to help my sister install dual boot Ubuntu with Mac OS. Apple's disk utility couldn't seem to resize the main HFS+ partition, claiming that there wasn't enough free space (even though 12GB was available). I figured it was a system file in use, so it was off to burn a bootable OS X install DVD--because she's like everyone else and lost her original one. As an aside: Who ever saves these things? I'm still dreaming of the day a client answers, "Yes!" to the question, "Do you have the original install CDs?"
I had an ext3 formatted disk with the OS X .ISO file on it, and needed to use a Windows system that had a DVD-DL drive (the Mac OS X disk is 7.5GB). Even with some 3rd party ext3 utilities for OS X, I still could not read the ext3 partition. I gave up.
Just because it's based on Open Source, doesn't mean it's for geeks.