diff --git a/CHANGELOG b/CHANGELOG
index 2980ce3..c04b6d8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -49,4 +49,5 @@
 0.8
 - Added __eq__ to relation object, will compare ignoring order.
 - New default relation's format is csv, as defined in RFC4180
-- Converted sample's relations to csv
\ No newline at end of file
+- Converted sample's relations to csv
+- Deb postinstall generates optimized files
diff --git a/Makefile b/Makefile
index 035c524..f88046f 100644
--- a/Makefile
+++ b/Makefile
@@ -45,7 +45,7 @@ debian:
 	echo "This program is under the GPLv3 license" >> data/usr/share/doc/relational/copyright
 
 	cp CHANGELOG data/usr/share/doc/relational/changelog
-	echo "relational ("`./relational.py -v | cut -d. -f1`":"`./relational.py -v`") unstable; urgency=low" >> data/usr/share/doc/relational/changelog.Debian
+	echo "relational ("`./relational.py -v | cut -d. -f1`":"`./relational.py -v`+SVN`svn update | cut -d" " -f3 | tr -d "."`") unstable; urgency=low" >> data/usr/share/doc/relational/changelog.Debian
 	echo "" >> data/usr/share/doc/relational/changelog.Debian
 	echo "  * Automatically generated package, see changelog.gz" >> data/usr/share/doc/relational/changelog.Debian
 	echo "" >> data/usr/share/doc/relational/changelog.Debian
@@ -77,10 +77,10 @@ debian:
 	mkdir -p data/DEBIAN
 	#package description
 	echo "Package: relational" >> data/DEBIAN/control
-	echo "Version: "`./relational.py -v | cut -d. -f1`":"`./relational.py -v` >> data/DEBIAN/control
+	echo "Version: "`./relational.py -v | cut -d. -f1`":"`./relational.py -v`+SVN`svn update | cut -d" " -f3 | tr -d "."`>> data/DEBIAN/control
 	echo "Architecture: all" >> data/DEBIAN/control
 	echo "Maintainer: Salvo 'LtWorf' Tomaselli <tiposchi@tiscali.it>" >> data/DEBIAN/control
-	echo "Installed-Size: "`du -bs --apparent-size data/ | cut -f1` >> data/DEBIAN/control
+	echo "Installed-Size: "`du -s --apparent-size data/ | cut -f1` >> data/DEBIAN/control
 	echo "Depends: python-qt4 (>= 4.0.1-5), python (>= 2.3)" >> data/DEBIAN/control
 	echo "Recommends: libqt4-webkit (>= 4.4.3-1)" >> data/DEBIAN/control
 	echo "Section: devel" >> data/DEBIAN/control
@@ -89,8 +89,23 @@ debian:
 	echo "Description: Python implementation of Relational algebra.">> data/DEBIAN/control
 	echo " This program provides a GUI to execute relational algebra queries.">> data/DEBIAN/control
 	echo " It is meant to be used for educational purposes.">> data/DEBIAN/control
-	su -c "chown -R root:root data/*; dpkg -b data/ relational.deb; rm -rf data/"
-	cp relational.deb relational_`./relational.py -v`.deb
-	rm -f relational.deb
+
+	#Postinst to generate optimized files
+	echo "#!/usr/bin/python" > data/DEBIAN/postinst
+	echo "import py_compile" >> data/DEBIAN/postinst
+	echo "import os" >> data/DEBIAN/postinst
+	printf "for i in os.listdir(\"/usr/share/python-support/relational/\"):\n" >> data/DEBIAN/postinst
+	printf "  if i.endswith(\".py\"):\n" >> data/DEBIAN/postinst
+	printf "    py_compile.compile(\"/usr/share/python-support/relational/\"+i)\n" >> data/DEBIAN/postinst
+
+	#Postrm file to remove optimized generated python files
+	echo "#!/bin/sh" > data/DEBIAN/postrm
+	echo "set -e" >> data/DEBIAN/postrm
+	echo "rm -rf /usr/share/python-support/relational/" >> data/DEBIAN/postrm
+	echo "exit 0" >> data/DEBIAN/postrm
+
+	chmod 0755 data/DEBIAN/postrm data/DEBIAN/postinst
 	
-	
\ No newline at end of file
+	su -c "chown -R root:root data/*; dpkg -b data/ relational.deb; rm -rf data/"
+	cp relational.deb relational_`./relational.py -v`+SVN`svn update | cut -d" " -f3 | tr -d "."`.deb
+	rm -f relational.deb
diff --git a/relational.1 b/relational.1
index dffec03..f95244a 100644
--- a/relational.1
+++ b/relational.1
@@ -1,6 +1,6 @@
 .TH "Relational" "1" 
 .SH "NAME" 
-relational \(em .Python implementation of Relational algebra. 
+relational \(em Python implementation of Relational algebra. 
 .SH "SYNOPSIS" 
 .PP 
 \fBrelational\fR [\-v\fR\fP]