Index: debian_installer/lams2/debian/config
===================================================================
diff -u -re76fd205caafcee0c7521337f99071b574a1bfe3 -r54142f2998932ba25d1c3e9ad1c14b09b218c5ed
--- debian_installer/lams2/debian/config	(.../config)	(revision e76fd205caafcee0c7521337f99071b574a1bfe3)
+++ debian_installer/lams2/debian/config	(.../config)	(revision 54142f2998932ba25d1c3e9ad1c14b09b218c5ed)
@@ -2,25 +2,33 @@
 
 . /usr/share/debconf/confmodule
 
+# check if sysadmin pass has been answered, i.e. if we are updating existing install
+db_get lams2/sysadmin_pass || true
+sysadmin_pass="$RET"
+
 db_input critical lams2/db_root_pass || true
 #db_input critical lams2/db_name || true
 #db_input critical lams2/db_user || true
 #db_input critical lams2/db_pass || true
-db_beginblock
 db_input critical lams2/server_host || true
 db_input critical lams2/server_port || true
-db_endblock
 db_input critical lams2/sysadmin_user || true
+db_input critical lams2/sysadmin_pass || true
 
-db_go
+# don't ask this q if updating (for updating from rc1 when this q was added)
+if [ "x$sysadmin_pass" = "x" ] ; then
+    db_input critical lams2/sysadmin_pass_confirm || true
+else
+    db_set lams2/sysadmin_pass_confirm $sysadmin_pass || true
+fi
 
-db_input critical lams2/sysadmin_pass || true
-db_input critical lams2/sysadmin_pass_confirm || true
 db_go
+
 db_get lams2/sysadmin_pass || true
 sysadmin_pass="$RET"
 db_get lams2/sysadmin_pass_confirm || true
 sysadmin_pass_confirm="$RET"
+
 while [ "$sysadmin_pass" != "$sysadmin_pass_confirm" ]; do
     db_input critical lams2/sysadmin_pass_again || true
     db_input critical lams2/sysadmin_pass_confirm || true