diff --git a/system/rar/README b/system/rar/README
index f27961cb7c..f814018ae0 100644
--- a/system/rar/README
+++ b/system/rar/README
@@ -1,10 +1,7 @@
-rar is a command line utitility for creating RAR archives.
+Rar is a powerful tool for processing RAR archives.
 
-This SlackBuild repackages the official binary.  
+This is a shareware program.  If you would like to continue using RAR
+after 40 days, you will have to purchase a license.  See license.txt
+in the docs directory for more details.
 
-This is a shareware program. If you would like to continue using RAR 
-after 40 days, you will have to purchase a license. See license.txt in 
-the docs directory for more details.
-
-To include unrar in the package, run the script like this:
-UNRAR=yes ./rar.SlackBuild
+To include unrar in the package, run the script with UNRAR=yes
diff --git a/system/rar/rar.SlackBuild b/system/rar/rar.SlackBuild
index bc88e81684..a35cf92ccf 100644
--- a/system/rar/rar.SlackBuild
+++ b/system/rar/rar.SlackBuild
@@ -1,20 +1,21 @@
 #!/bin/sh
 
 # Slackware build script for rar
-# Written by Steven Pledger <piratesmack@ymail.com>
+# Written by Steven Pledger <spledger91@yahoo.com>
 
-# Changelog:
 # Modifed for new rar version with x64 support by Ozan Türkyılmaz ozan.turkyilmaz@gmail.com
-# rev 3: updated to rar 3.9.1, added option to install unrar -steven
-# rev 4: updated to rar 3.9.2 -steven
-# rev 5: updated to rar 3.9.3 -steven
 
 PRGNAM=rar
-VERSION=${VERSION:-3.9.3}
-ARCH=${ARCH:-i386}
+VERSION=${VERSION:-4.0.b3}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
+case "$( uname -m )" in
+  i?86) ARCH=i386 ;;
+  arm*) ARCH=arm ;;
+     *) ARCH=$( uname -m ) ;;
+esac
+
 CWD=$(pwd)
 TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
@@ -29,9 +30,11 @@ set -e
 if [ "$ARCH" = "x86_64" ]; then
    LIBDIRSUFFIX="64"
    x64FIX="x64-"
-else
+elif [ "$ARCH" = "i386" ]; then
    ARCH=i386
    LIBDIRSUFFIX=""
+else
+   printf "\n$ARCH is not supported...\n\n" ; exit 1
 fi 
 
 rm -rf $TMP/$PRGNAM $PKG
@@ -48,7 +51,7 @@ install -m 0755 rar $PKG/usr/bin
 mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}
 install -m 0755 default.sfx $PKG/usr/lib${LIBDIRSUFFIX}
 
-if [ "$UNRAR" = "yes" ]; then
+if [ "$UNRAR" != "no" ]; then
   install -m 0755 unrar $PKG/usr/bin
 fi
 
diff --git a/system/rar/rar.info b/system/rar/rar.info
index 6c471fa068..286670f082 100644
--- a/system/rar/rar.info
+++ b/system/rar/rar.info
@@ -1,10 +1,10 @@
 PRGNAM="rar"
-VERSION="3.9.3"
+VERSION="4.0.b3"
 HOMEPAGE="http://www.rarlab.com/"
-DOWNLOAD="http://www.rarlab.com/rar/rarlinux-3.9.3.tar.gz"
-MD5SUM="4a9a8cf0612735e860f72bdd46c1a03e"
-DOWNLOAD_x86_64="http://www.rarlab.com/rar/rarlinux-x64-3.9.3.tar.gz"
-MD5SUM_x86_64="622e6aed2de89fd3871f43a2bef0a5c6"
+DOWNLOAD="http://www.rarlab.com/rar/rarlinux-4.0.b3.tar.gz"
+MD5SUM="d75306cfd9aaa4b2c61df46b8ee4784b"
+DOWNLOAD_x86_64="http://www.rarlab.com/rar/rarlinux-x64-4.0.b3.tar.gz"
+MD5SUM_x86_64="2e0cbf932eaf77d82a13637ebf2cb372"
 MAINTAINER="Steven Pledger"
-EMAIL="piratesmack@ymail.com"
-APPROVED="Erik Hanson"
+EMAIL="spledger91@yahoo.com"
+APPROVED="rworkman"
diff --git a/system/rar/slack-desc b/system/rar/slack-desc
index 2c8cbf8b5c..da08a88930 100644
--- a/system/rar/slack-desc
+++ b/system/rar/slack-desc
@@ -6,14 +6,14 @@
 # leave one space after the ':'.
 
    |-----handy-ruler------------------------------------------------------|
-rar: rar (creates rar archives)
+rar: rar (processes RAR files)
 rar:
-rar: Create RAR archives in Linux.
+rar: Rar is a powerful tool for processing RAR archives.
 rar:
 rar: Homepage: http://www.rarlab.com
 rar:
-rar: This is a Shareware Program. You must buy a license from Rar Labs if
-rar: you want to keep using rar.
+rar: This is a shareware program.  You must buy a license
+rar: from Rar Labs if you want to keep using rar.
 rar:
 rar:
 rar: