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Editing sysctl.conf in your linux can improve your internet connection and maximize your bandwidth. This work with all current linux operating systems including Ubuntu:
first open a Terminal via Applications->Accessories->Terminal

sudo gedit /etc/sysctl.conf

Then Paste the Following at the end of the file:

# increase TCP max buffer size setable using setsockopt()
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
# increase Linux autotuning TCP buffer limits
# min, default, and max number of bytes to use
# set max to at least 4MB, or higher if you use very high BDP paths
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
# don't cache ssthresh from previous connection
net.ipv4.tcp_no_metrics_save = 1
net.ipv4.tcp_moderate_rcvbuf = 1
# recommended to increase this for 1000 BT or higher
net.core.netdev_max_backlog = 2500
# for 10 GigE, use this, uncomment below
# net.core.netdev_max_backlog = 30000
# Turn off timestamps if you're on a gigabit or very busy network
# Having it off is one less thing the IP stack needs to work on
#net.ipv4.tcp_timestamps = 0
# disable tcp selective acknowledgements.
net.ipv4.tcp_sack = 0
#enable window scaling
net.ipv4.tcp_window_scaling = 1

Press Ctrl-S To save then alt-F4 to exit and then type:

sudo sysctl -p

That’s should do it.


source : http://www.ubuntu-unleashed.com

It was known to mankind Ubuntu Gutsy Gibbon has problem to work around with the wireless adapter, connecting to wifi is not easy. Wifi Radar utility for managing WiFi profiles. It scans for available networks and create profiles for your preferred networks. It will connect to open hotspots automatically and shows you exactly what it is doing in a cool animated radar screen. You need to browse through a list of access points, find one that you can connect to, manually try to connect to it, confirm the connection and then wait.

At boot time, running WiFi Radar will automatically scan for an available preferred network and connect to it. You can drag and drop your preferred networks to arrange the profile priority.  WiFi Radar is tested to work with Centrino’s WiFi card IPW2100 but should work just the same for any iwconfig interface.

You can get it here

Most linux users knew that it is not complete to run a webhost without Apache,Mysql and Php installed in it. The easiest way to setup LAMP is with Ubuntu. Although Ubuntu came with its own server edition, you can go with Desktop edition to get it done. Best thing if you’re planning on setting up Lamp on Desktop edition is you get a desktop and all that comes with it.


In every linux installation, the first thing I always do is setup apache, mysql, and php. Under Ubuntu, if you take advantage of the synaptic package manager, setting up your LAMP server has never before been more simple. OK let’s get it kicking, to get the most out of Ubuntu, first thing you want to do is update your repositories.

let do the magic keyword

sudo apt-get install update

Now to get Apache installed.

sudo apt-get install apache2

Php5 turn

sudo apt-get install mysql-server
sudo apt-get install libapache2-mod-auth-mysql
sudo apt-get install php5-mysql
sudo apt-get install phpmyadmin

Next edit php.ini to enable the extension

gksudo gedit /etc/php5/apache2/php.ini
extension=mysql.so

And that’s is all of it to get changes to effect you need to restart apache
$ sudo /etc/init.d/apache2 restart

that’s it, Now you get yourself a webserver running in Ubuntu.

The main problem after you divided your hard disk to install linux in your hard drives is you cant really see it again in your windows drives. Most likely this is normal for the dual booters who has linux and windows on the same drives. Linux Reader, a free Windows application that emulates the look and feel of the Windows XP Explorer and allows read-only access to ext2 and ext3-formatted drives, the most common formats for Linux installations.


It is is a newly developed software tool for providing access to Linux file systems under Windows. It lets you use a familiar ambience of Windows Explorer for extracting information from Ext2/Ext3 file systems. The only type of access possible here is read-only mode. It prevents you from interference with Linux and guarantees stable work of your OS.

This cool tool developed by DiskInternals is totally free and it works on older windows operating system like windows 95,windows 98 and up to the latest version. You can download it here to give it a shot.