I have the same problem with my distri and my do_rootfs
mkfs.jffs2 -x lzo --root=/usr/src/trunk/projects/foo/build/tmp/rootfs/../rootfs_g/ --faketime --output=/usr/src/trunk/projects/foo/build/tmp/deploy/images/rootfs.jffs2 --little-endian -e 128 --pad=27131904
mkfs.jffs2: opening directory /usr/src/trunk/projects/foo/build/tmp/rootfs_g/lib/libblaconfig.so.0: Not a directory
Sometimes i got an error on "cp".
I have updated to ubuntu 8.04. The same error was on debian testing.
Maybe this is a pyton problem
Python 2.4.4 -> works
Python 2.5.2 -> failes