diff --git a/.zshrc b/.zshrc
index 22975bf..13f0865 100644
--- a/.zshrc
+++ b/.zshrc
@@ -76,41 +76,40 @@ PR_NO_COLOUR="%{$terminfo[sgr0]%}"
 case `uname` in
   Darwin)
     PR_HOST_COLOR=$PR_CYAN
-    MD5_COMMAND=md5
-    MD5_COMMAND_OPTS=""
+    ;;
+  Linux)
+    PR_HOST_COLOR=$PR_GREEN
     ;;
   *)
-    PR_HOST_COLOR=$PR_GREEN
-    MD5_COMMAND="md5sum"
-    MD5_COMMAND_OPTS="--tag"
+    PR_HOST_COLOR=$PR_YELLOW
     ;;
 esac
 
-PR_HOST_COLOR=$PR_NO_COLOUR
-if [ -x "$(command -v $MD5_COMMAND)" ]; then
-  str=`echo -n "${HOST} ${HOSTNAME}" | $MD5_COMMAND $MD5_COMMAND_OPTS`
-  last="${str: -1}"
-  echo
-  case $last in
-    "1"|"6"|"b"|"0")
-      PR_HOST_COLOR=$PR_GREEN
-      ;;
-    "2"|"7"|"c")
-      PR_HOST_COLOR=$PR_YELLOW
-      ;;
-    "3"|"8"|"d")
-      PR_HOST_COLOR=$PR_BLUE
-      ;;
-    "4"|"9"|"e")
-      PR_HOST_COLOR=$PR_MAGENTA
-      ;;
-    "5"|"a"|"f")
-      PR_HOST_COLOR=$PR_CYAN
-      ;;
-    "*")
-      ;;
-  esac
-fi
+#PR_HOST_COLOR=$PR_NO_COLOUR
+#if [ -x "$(command -v $MD5_COMMAND)" ]; then
+  #str=`echo -n "${HOST} ${HOSTNAME}" | $MD5_COMMAND $MD5_COMMAND_OPTS`
+  #last="${str: -1}"
+  #echo
+  #case $last in
+    #"1"|"6"|"b"|"0")
+      #PR_HOST_COLOR=$PR_GREEN
+      #;;
+    #"2"|"7"|"c")
+      #PR_HOST_COLOR=$PR_YELLOW
+      #;;
+    #"3"|"8"|"d")
+      #PR_HOST_COLOR=$PR_BLUE
+      #;;
+    #"4"|"9"|"e")
+      #PR_HOST_COLOR=$PR_MAGENTA
+      #;;
+    #"5"|"a"|"f")
+      #PR_HOST_COLOR=$PR_CYAN
+      #;;
+    #"*")
+      #;;
+  #esac
+#fi
 
 
 PROMPT='$PR_STITLE$PR_LIGHT_BLUE($PR_LIGHT_YELLOW%D{%H:%M}|%!$PR_BLUE%)[%(!.$PR_RED.$PR_HOST_COLOR)%n@%m$PR_LIGHT_CYAN %~$PR_BLUE]$PR_NO_COLOUR