I fixed a little bug in the init script.
I reported this to autofs@linux.kernel.org but never heard back
                                                                                
I needed to have this:
root     29001  0.0  0.0  1552  600 pts/5    S    12:25   0:00
/usr/sbin/automount --timeout 300 /var/local/tftproot/auto yp auto.auto
rsize=8192,wsize=8192,hard,intr,timeo=1
root     29090  0.0  0.0  1552  600 pts/5    S    12:25   0:00
/usr/sbin/automount --timeout 300 /auto yp auto.auto
rsize=8192,wsize=8192,hard,intr,timeo=1
(...)


The problem  is that the  grep looked for /auto/  which would match  on both
mountpoints:

+ read dir map options
+ '[' '!' -z auto.auto -a auto.auto = -hosts ']'
++ echo auto.auto
++ cut -c1
++ echo ' /u2/  /net/  /misc/  /auto/  /u2/  /net/  /var/local/tftproot/auto/  '
++ grep /auto/
+ '[' '!' -z /auto -a '!' -z auto.auto -a xa '!=' x- -a ' /u2/  /net/  /misc/ 
/auto/  /u2/  /net/  /var/local/tftproot/auto/  ' = '' ']'
+ knownmaps= /auto/  /u2/  /net/  /misc/  /auto/  /u2/  /net/ 
/var/local/tftproot/auto/

The fix is:
--- autofs.redhat       Tue Aug 20 12:19:14 2002
+++ autofs      Tue Aug 20 12:25:08 2002
@@ -156,7 +156,7 @@
            fi
            if [ ! -z "$dir" -a ! -z "$map" \
                        -a x`echo "$map" | cut -c1` != 'x-' \
-                       -a "`echo "$knownmaps" | grep $dir/`" = "" ]
+                       -a "`echo "$knownmaps" | grep ' '$dir/`" = "" ]
            then
                # If the options include a -t or --timeout parameter, then
                # pull those particular options out.

Cheers,
Marc