2.6.4 initrd umount problem workaround (resend)

[David Baron <d_baron@012.net.il>]

I am sending this again for the benefit of others seeing this problem:

It is apparently a timing problem for whatever reason.

I changed /etc/rcS.d/S05initrd-tools.sh to do a "lazy" umount and it seems OK. 
After bootup, there is no /initrd in /etc/mtab.

The line will read, for now:
umount -l /initrd || exit