Index: /trunk/src/VBox/Additions/linux/installer/vboxadd.sh
===================================================================
--- /trunk/src/VBox/Additions/linux/installer/vboxadd.sh	(revision 76911)
+++ /trunk/src/VBox/Additions/linux/installer/vboxadd.sh	(revision 76912)
@@ -113,7 +113,7 @@
 {
     if test -z "${QUIET}"; then
-        echo "${SERVICE}: $1"
+        echo "${SERVICE}: $1" | fold -s
     else
-        echo "$1"
+        echo "$1" | fold -s
     fi
 }
@@ -505,4 +505,8 @@
         # That is, we mark all but the requested kernel.
         rm -f "$SKIPFILE_BASE"-"$TARGET_VER"
+        test -d /lib/modules/"TARGET_VER"/build || test -n "$QUICKSETUP" ||
+            info "Kernel headers not found for target kernel $TARGET_VER. \
+Please install them and execute
+  /sbin/rcvboxadd setup"
         for setupi in /lib/modules/*; do
             KERN_VER="${setupi##*/}"