<h2>Install Python</h2>
- <p>Check if you already have an adequate version of Python installed by running <cite>python -V</cite>. Python v2.4 (v2.4.4 or greater), Python v2.5 or Python v2.6 will work. Python v3 does not work. On Windows, we recommend the use of Python v2.6 (native, not Cygwin). If you don't have one of these versions of Python installed, then follow the instructions on <a href="http://www.python.org/download/releases/2.6.5/">the Python download page</a> to download and install Python v2.6. Make sure that the path to the installation directory has no spaces in it (e.g. on Windows, do not install Python in the "<tt>Program Files</tt>" directory).</p>
+ <p>Check if you already have an adequate version of Python installed by running <cite>python -V</cite>. Python v2.4 (v2.4.4 or greater), Python v2.5 or Python v2.6 will work. Python v3 does not work. On Windows, we recommend the use of Python v2.6 (native, not Cygwin). If your OS distribution packages Python development files such as <code>python.h</code> separately, you will also need those; for example, the <code>python-dev</code> package is needed on Ubuntu. If you don't have one of these versions of Python installed, then follow the instructions on <a href="http://www.python.org/download/releases/2.6.5/">the Python download page</a> to download and install Python v2.6, including development files. Make sure that the path to the installation directory has no spaces in it (e.g. on Windows, do not install Python in the "<tt>Program Files</tt>" directory).</p>
<p>If you are on Windows, you now must manually install the pywin32 package from <a href="http://sourceforge.net/projects/pywin32/files/">the pywin32 site</a> before getting Tahoe-LAFS. Make sure to get the correct file for the version of Python you are using — e.g. ending in "py2.6.exe" for Python v2.6. If using 64-bit Windows, the file should have "win-amd64" in its name.</p>
<h2>Get Tahoe-LAFS</h2>