If you want to select Ubuntu mirror which works fastest for you follow these steps this is very important to any ubuntu user to download and install ubuntu packages fastest way.
Compiz-Check is a script to test if Compiz is able to run on your system/setup and if not, it will tell you the reason why.
The script is suitable for GNOME, KDE and Xfce users and is not limited to a specific Linux distribution – in fact, the script lists those infos for you.
FlyBack is a snapshot-based backup tool based on rsync It creates successive backup directories mirroring the files you wish to backup, but hard-links unchanged files to the previous backup. This prevents wasting disk space while providing you with full access to all your files without any sort of recovery program. If your machine crashes, just move your external drive to your new machine and copy the latest backup using whatever file browser you normally use.
If you want to make your windows XP,Vista Machines look like ubuntu you need to follow this procedure
Start with the visual style, if you haven’t already install Uxtheme Multipatcher, this will remove the limitations on your system, in order to install new themes. Then download the Human Visual Style
Install compiz-fusion plugins on Ubuntu with compiz-git.You need to follow this procedure to install
Download compiz-git using the following commands
In a terminal use the following commands

