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IMHO the two lines I have highlighted in bold might be simplified in a single line as follows:
system("rm -iv $file");#where "i" means "interactive" and "v" means "verbose"

try
#include <asm-generic/page.h>

assuming that you have a lot of duplicated files with different names and extensions, wouldn't it be preferable the following command:
find . -iname *(2).* -exec rm {} \;:?:

have you tried to run the following command in a Terminal window:
sudo find / -iname page.h:?:
If that file exists on the HD on which you installed Ubuntu, with that command you'll find it.

you're right.
I've made confusion while reading the fifth line of the script.
My apologies to the OP for my mistake.

the first line of your script sets I (uppercase i) to 0 (zero); the second and the third lines do the same, but using the value of I instead of setting directly these variables to 0.
The fourth line...

you might give a look to the following links:
http://www.opengl.org/wiki/Getting_Started#Linux
http://www.opengl.org/wiki/OpenGL_in_Linux:_Programming

you might give a look at the following link:
https://help.ubuntu.com/12.04/ubuntu-help/shell-windows-tiled.html

it seems to me that you've forgotten one parentheses at the end of last line of your piece of code.
In addition to that, the last line isn't correctly indented.

the OP posted again the code here.

you might install Kubuntu 12.04 LTS and then run the following command from Konsole (the Kubuntu terminal):
sudo apt-get install kubuntu-low-fat-settingsso that the OS is tuned for your hardware.

I've bought this book for learning C++: The C++ Programming Language, 4th Edition.

there would be unsettings, but remember that is beta software.

thank you very much for this explanation; each guide I've read didn't specify to use that flag for installing only gnome-session-fallback.
Only one more question:
sudo apt-get install...

as far as I have been able to experiment, every time I have installed gnome-session-fallback there was available also gnome-shell as desktop environment.
Perhaps I have made something wrong, but is...

since gnome-session-fallback installs also gnome-shell, you might prefer to install gnome-panel, that only has the gnome 2 classic desktop.
And if you wish an even more faster desktop environment,...

About the issues of the representation of floating point numbers, there's an interesting chapter of the python tutorial, that IMHO is useful for understanding how a PC manages those numbers.
About...

you might try exiftool.

if you wish to install Xubuntu 12.04.2 but you only have a CD, you might do these steps:

download Xubuntu 12.04.1 from here;
burn that ISO on a CD;
install Xubuntu on your PC and download...

Xubuntu 12.04.2 64bit has an ISO image of 707Mb, while the 32bit release has an ISO image of 689Mb: see here.

my "fred" is completely red, as you can see:

http://img839.imageshack.us/img839/117/2ei.png

I ran your code with python 2.7.3, as I have already said in my previous post.

after having installed the python-tk package (that is requested by the turtle module), I tested your code under python 2.7.3 (the standard python release on Ubuntu 12.04) and all worked fine.
Also...

the following link shows a tip for controlling CPU and RAM usage:
http://stackoverflow.com/questions/276052/how-to-get-current-cpu-and-ram-usage-in-python/278271#278271

you might use ideone, an online editor for a lot of programming languages.
It allows you to test immediately your code.
That said, why do you use os.popen instead of subprocess?

this should be the code
import os
import time

def getWeather(interval):
a = int(time.time()) + int(interval)
b = int(time.time())
dataFile = open('/sdcard/weather.txt','a')
...