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diff --git a/Plugins/Monitors/Cpu.hs b/Plugins/Monitors/Cpu.hs
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+++ b/Plugins/Monitors/Cpu.hs
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+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.Monitors.Cpu
+-- Copyright   :  (c) Andrea Rossato
+-- License     :  BSD-style (see LICENSE)
+-- 
+-- Maintainer  :  Andrea Rossato <andrea.rossato@unibz.it>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A cpu monitor for Xmobar
+--
+-----------------------------------------------------------------------------
+
+module Plugins.Monitors.Cpu where
+
+import Plugins.Monitors.Common
+import qualified Data.ByteString.Lazy.Char8 as B
+
+cpuConfig :: IO MConfig
+cpuConfig = mkMConfig
+       "Cpu: <total>"                           -- template
+       ["total","user","nice","system","idle"]  -- available replacements
+
+cpuData :: IO [Float]
+cpuData = do s <- B.readFile "/proc/stat"
+             return $ cpuParser s
+
+cpuParser :: B.ByteString -> [Float]
+cpuParser =
+    map read . map B.unpack . tail . B.words . flip (!!) 0 . B.lines
+
+parseCPU :: IO [Float]
+parseCPU = 
+    do (a,b) <- doActionTwiceWithDelay 750000 cpuData
+       let dif = zipWith (-) b a
+           tot = foldr (+) 0 dif
+           percent = map (/ tot) dif
+       return percent
+
+formatCpu :: [Float] -> Monitor [String] 
+formatCpu [] = return [""]
+formatCpu x =
+    do let f s = floatToPercent (s / 100)
+           t = foldr (+) 0 $ take 3 x
+           list = t:x
+       mapM (showWithColors f) . map (* 100) $ list
+
+runCpu :: [String] -> Monitor String
+runCpu _ =
+    do c <- io $ parseCPU
+       l <- formatCpu c
+       parseTemplate l