mount proc crashes
 

When I carried out the mounting of /proc near the beginning of chapter 6, it falls over with a 'segmentation fault' initally, and just hangs up completely the second time. I then reset the machine and tried again, after doing chroot, and it gives an error about "/etc/mstab~" (can't remember the exact words), recommending I use "-n". So I add "-n" to the mount command and it seems to do it OK.
I know I have seemingly carried out the mount successfully eventually, but I'm a little concerned about these problems that occured.

You mount the $LFS /proc and $LFS devpts all before you enter the chroot enviroment. Doing it after would give you the /etc/fstab or /etc/mstab errors as you havnt created those files yet!

It depends which book you're following. LFS 5 mounts proc after chrooting but current CVS versions of the book do it before you chroot..

I just did what the book told me, which is to do after chroot. I'll try it before chroot in the future to see if it goes away now.

Yep, doing it before chroot seems to be clean now, and not needing -n.