Well, Microsoft never released the NTFS specs, so everything is reverse engineered. As such, the quality is not very good when it comes to the NTFS "drivers" (well, modules).
Mandrake allows you to resize NTFS partions _after_ you defrag them, thus not allowing Mandrake to accidently remove parts of files, etc.
NTFS read support is standard in many distros, though writing is usually not, because it often destroys the (NTFS) partition (on accident!).
Aside from that, I agree with Zombie. It's not _that_ bad--much better, than say, ext2 or FAT32.