checkroot.sh remount unionfs causes hang

[jpryzby+ckvpdl at quoininc.com (Justin Pryzby)]

The following command from checkroot.sh hung apparently forever during
boot, shortly after the "INIT" line, immediately after "activating
swap: done\n" was output:

	mount -n -o remount,rw,rw unionfs /

commented it out allowed future boots to continue as expected.

I'm assuming this doesn't happen for everyone else?  :)

How do I fix it (without manually munging the chroot/)?

I'm using grub, unstable, 2.6.22, live-initramfs.

Thanks
Justin