Running: ntfs-3g /dev/ntfs-partition /mnt/mymount
hangs and can't be killed until reboot.

Interestingly, when I tried to mount a drive that had not been cleanly unmounted, it gave me the standard error message about needing to run Winxp or force a mount (and did not hang) However, with clean drives, it ALWAYS hangs.

Details:
-Linux 2.6.12.6 (this is pretty much a vanilla linux but I did have to make one small patch to export the symbol "flush_cache_page" for use by the fuse module)
-Fuse 2.7.4 (I tried both unpatched and patching to comment out the asm symver compat22 lines as per http://forum.ntfs-3g.org/viewtopic.php?t=115)
-NTFS-3g: ntfs-3g-1.5012

I am cross-compiling everything under Fedora8/Linux 2.6.25 using a uclibc toolchain (uclibc-toolchain-src-20040609) and arm-linux-gcc-3.3.3

When I run ntfs-3g under strace, it fails on the following command:

mount("/dev/ntfs-partition", "/mnt/mymountpoint", "fuse", 0, "allow_other,fd=4,rootmode=40000,"... <unfinished ...>

Any ideas on what I need to do to further troubleshoot or (hopefully) fix this?

Note because of other constraints, I am pretty much limited to sticking with the 2.6.12.6 kernel for now and also can't really upgrade the uclibc toolchain.

Too old, broken kernel.

Does that mean that nothing can be done? or have people been successful with that kernel?

I guess I was under the (mistaken) impression that NTFS-3g could be backported to even older kernels such as 2.4 series etc.

Does NTFS-3g list anywhere what are the minimum kernel requirements?

Everything is possible, it just requires time. NTFS-3G works fine even with 2.4 kernels but some kernels need changes. It depends on the embedded environment. If you can't fix it then you may contact your vendor to purchase our support service: http://ntfs-3g.org/commercial.html

Well since this is for personal use, I can't really justify spending 3rd party development $$$.

Of course, I can't expect you to do this for free, but could anyone give me some pointers so I could try to perhaps fix this myself?

It hangs in the kernel, so you could ask the kernel developers. The problem really has nothing to do with NTFS-3G. It only reliable triggers the kernel bug which probably was already fixed 3 years ago.

You could try things discussed in this thread: http://forum.openwrt.org/viewtopic.php?pid=75221