Problem sharing UFS2 between PPC and i386

[Christopher Illies]

When I format ("newfs") my memory stick with UFS2 on a i386 FBSD system
and try to mount it on PPC mount gives the error message "Invalid argument".

Similarly, if the memory stick is formatted with UFS2 on PPC and I try to mount
it on i386, mount fails with the error message: "incorrect super block"

There are no problems if the memory stick is formatted with msdosfs.

I had similar problems with an external hardisk when I wanted to share a
UFS partition/slice.

I could only find this in the archives:

http://lists.freebsd.org/mailman/htdig/freebsd-ppc/2004-October/000717.html

Are these problems expected? Is anyone else seeing this?
Could this have to do with big endian vs. little endian (just an idea, I have 
little clue myself what this is)?

Christopher