--- VirtualBox-4.3.8/src/VBox/Installer/linux/VBox.sh	2014-03-01 18:25:47.973662413 +0200
+++ VirtualBox-4.3.10/src/VBox/Installer/linux/VBox.sh	2014-04-23 14:44:03.392690596 +0300
@@ -16,14 +16,30 @@
 PATH="/usr/bin:/bin:/usr/sbin:/sbin"
 CONFIG="/etc/vbox/vbox.cfg"
 
+show_message() {
+	local BINFILE=${0##*/} message
+
+	if [ "$DESKTOP" = "kde" ]; then
+		message=$(cat)
+		PATH=$(kde4-config --path exe) kdialog --sorry "$message"
+	elif [ -n "$DISPLAY" ] && [ -x /usr/bin/gxmessage ]; then
+		gxmessage --center --buttons GTK_STOCK_OK -wrap -geometry 400x150 -name $BINFILE -file -
+	elif [ -n "$DISPLAY" ] && [ -x /usr/bin/zenity ]; then
+		message=$(cat)
+		zenity --error --icon-name=virtualbox --text "$message"
+	else
+		cat >&2
+	fi
+}
+
 test -r "${CONFIG}" &&
     . "${CONFIG}"
 test -z "${INSTALL_DIR}" &&
-    if test -f /usr/lib/virtualbox/VirtualBox &&
-        test -x /usr/lib/virtualbox/VirtualBox; then
-        INSTALL_DIR=/usr/lib/virtualbox
+    if test -f @INSTALL_DIR@/VBoxSVC &&
+        test -x @INSTALL_DIR@/VBoxSVC; then
+        INSTALL_DIR=@INSTALL_DIR@
     else
-        echo "Could not find VirtualBox installation. Please reinstall."
+        echo "Could not find VirtualBox installation. Please reinstall." | show_message
         exit 1
     fi
 
@@ -33,7 +49,7 @@
 if [ "$1" = "shutdown" ]; then
     SHUTDOWN="true"
 elif ! lsmod|grep -q vboxdrv; then
-    cat << EOF
+    show_message << EOF
 WARNING: The vboxdrv kernel module is not loaded. Either there is no module
          available for the current kernel (`uname -r`) or it failed to
          load. Please recompile the kernel module and install it by
@@ -43,7 +59,7 @@
          You will not be able to start VMs until this problem is fixed.
 EOF
 elif [ ! -c /dev/vboxdrv ]; then
-    cat << EOF
+    show_message << EOF
 WARNING: The character device /dev/vboxdrv does not exist. Try
 
            sudo /etc/init.d/vboxdrv restart
@@ -55,7 +71,7 @@
 fi
 
 if [ -f /etc/vbox/module_not_compiled ]; then
-    cat << EOF
+    show_message << EOF
 WARNING: The compilation of the vboxdrv.ko kernel module failed during the
          installation for some reason. Starting a VM will not be possible.
          Please consult the User Manual for build instructions.