diff --git a/src/source/initializing.md b/src/source/initializing.md
index e15df10..115d842 100644
--- a/src/source/initializing.md
+++ b/src/source/initializing.md
@@ -51,7 +51,6 @@
 Java 6: for Gingerbread and newer
 
     $ sudo add-apt-repository "deb http://archive.canonical.com/ lucid partner"
-    $ sudo add-apt-repository "deb-src http://archive.canonical.com/ubuntu lucid partner"
     $ sudo apt-get update
     $ sudo apt-get install sun-java6-jdk
 
@@ -64,7 +63,7 @@
 
 ## Installing required packages ##
 
-To set up your development environment, install the following required packages:
+Ubuntu 10.04 (recommended)
 
     $ sudo apt-get install git-core gnupg flex bison gperf build-essential \
       zip curl zlib1g-dev libc6-dev lib32ncurses5-dev ia32-libs \
@@ -72,6 +71,13 @@
       libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown \
       libxml2-utils
 
+Ubuntu 11.10 (experimental)
+
+    $ sudo apt-get install git-core gnupg flex bison gperf build-essential \
+      zip curl zlib1g-dev libc6-dev libncurses5-dev ia32-libs-multiarch \
+      x11proto-core-dev libx11-dev libreadline6-dev libgl1-mesa-dev \
+      g++-multilib mingw32 tofrodos python-markdown libxml2-utils
+
 ## Configuring USB Access ##
 
 Under GNU/linux systems (and specifically under Ubuntu systems),
@@ -130,7 +136,10 @@
 
 ## Installing required packages ##
 
-- Install XCode from [the Apple developer site](http://developer.apple.com/). We recommend version 3.0 or newer.  If you are not already registered as an Apple developer, you will have to create an Apple ID in order to download.
+- Install XCode from [the Apple developer site](http://developer.apple.com/).
+We recommend version 3.1.4 or newer, i.e. gcc 4.2.
+If you are not already registered as an Apple developer, you will have to
+create an Apple ID in order to download.
 
 - Install MacPorts from [macports.org](http://www.macports.org/install.php).