At this past Ubuntu Developer Summit in Dallas, the idea was brought up to create a “beginners day,” similar to Open Week, teaching new Ubuntu users the basics of using Ubuntu. Myself, along with Elizabeth Krumbach, Penelope Stowe and Mark Cox volunteered to take the lead on this project. We have worked over the past month or so to plan and create the very first User Day on January 23, 2010. The times for the first User Day are currently set at 1200 UTC with the last course being offered …

Ubuntu has announced the release schedule of Ubuntu 10.04, Lucid Lynx. Lucid Lynx is scheduled for release on April 29, 2010, which will be the next Long Term Support release in the Ubuntu lineup. The schedule is as follows:

Now that you have Ubuntu 9.04 installed, we are going to add all the basic programs, codecs, and customizations that you may need on Ubuntu.
Services
Your new install probably has some services running that you don’t need. Let’s remove those to free up some system resources. To do this select System > Administration > Services. Unlock the services tab by entering your password. Then remove the services you do not need.

We are going to go over how to install Ubuntu 9.04 Jaunty Jackalope onto your computer.
1. Creating bootable media
Download the software and create in installation disk. You can download Ubuntu 9.04 from http://www.ubuntu.com/getubuntu/download After downloading Ubuntu, create an install CD.

Ubuntu has reciently announced the release schedule for the new version of Ubuntu (9.10) due in October of 2009. The schedule is as follows:
May 14, 2009 » Alpha 1 Release
June 11, 2009 » Alpha 2 Release
July 23, 2009 » Alpha 3 Release
August 13, 2009 » Alpha 4 Release
September 3, 2009 » Alpha 5 Release
September 17, 2009 » Alpha 6 Release
October 1, 2009 » Beta Release
October 22, 2009 » Release Candidate
October 29, 2009 » Ubuntu 9.10 Karmic Koala Final Release

This is a guest post by Dayid http://dayid.org
There are better options to see your memory usage; however it seems `free` is more attune to creating the confusion I’m attempting to quell here. That said, see the Redhat docs about /proc/meminfo
Other commands to use to see memory usage

$ vmstat -aS M #see the “inactive” column for a rough “free” idea.

The real answer
There’s no reason to clear what’s in RAM until you need more space to write to it.