If you want to install Oracle’s SQL Developer on Ubuntu (or another DEB based system such as Debian) you can do one of the following:

Download the RPM package and install using rpm (not advisable).
Download the RPM package and convert to a DEB package using alien
Download the ZIP file titled “Oracle SQL Developer for other platforms” [...]

On Ubuntu it used to be that ctrl-alt-backspace would kill X (the backend of the various graphical user interfaces on Linux). In an aim to be user friendly this is now disabled by default. This can be a real pain if X locks up, you can’t kill it nor change to a console.
On Debian and [...]

Some links to stuff I’ve either read or plan to read which I think is interesting:
Python is not Java, tips for Java programmers starting w/ Python:
http://dirtsimple.org/2004/12/python-is-not-java.html
Python for Bioinformatics:
http://www.pasteur.fr/recherche/unites/sis/formation/python/index.html
BioPython:
http://biopython.org/DIST/docs/tutorial/Tutorial.html
I need to know Selenium better, it’s possible that I might consider using it for a project I might be working on (that sounds like it might have [...]

Debian GNU/Linux 5.0, codenamed Lenny, was recently released. Here’s a round of of articles about the release and why you might want to consider Debian for your infrastructure.
Techworld sums up what this means for companies and highlights new features and security enhancements:
http://www.techworld.com/news/index.cfm?RSS&NewsID=110898
Debian 5.0, known as Lenny, will offer users improved security handling. For example, as [...]

If your installing RAD 7.5 (IBM Rational Application Developer) on Debian or Ubuntu, install the libstdc++5 package:
apt-get install libstdc++5

To enable mod_perl with Apache2 on Debian & Ubuntu for all directories served up by Apache2, including user directories such as ~/public_html, add the following lines to /etc/apache2/sites-available/default
# enable mod_perl
    <Files ~ “\.(pl|cgi)$”>
           SetHandler perl-script
           PerlResponseHandler ModPerl::Registry
           Options +ExecCGI
           PerlSendHeader On
    </Files>
In a real production environment you probably don’t want to enable this for all [...]

After upgrading to Flash 10 sound stopped working. Installing the flashplugin-nonfree-extrasound package solved that problem for me:
aptitude install flashplugin-nonfree-extrasound
If your using pulse audio, install the flashplugin-nonfree-pulse package. It doesn’t look like the Debian flash plug-in suggests either package:
apt-cache show flashplugin-nonfree|more
Package: flashplugin-nonfree
Priority: optional
Section: contrib/web
…
Suggests: iceweasel, konqueror-nsplugins, x-ttcidfont-conf, msttcorefonts, ttf-dejavu, ttf-xfree86-nonfree, xfs (>= 1:1.0.1-5)

Doesn’t perform badly, I’ve been using it recently with Ruby code, and I like how it colourises the code to make editing code easier, and performs it auto-completion and method lookup (basically all the features you’d expect with a modern IDE).
It’s does’t startup as fast as using Emacs, or vi, but I find the features [...]

I figured it’s time for me to try and install kde4 again! Previously I had to remove KDE4 due to package conflicts. There are installation instructions at:
http://pkg-kde.alioth.debian.org/experimental.html
So following the instructions there on what changes to make to your sources.list, and then run:
aptitude update
I’ve had some dependency issues, and installing the kde4 package (a meta-package that [...]

I thought I’d start looking at using Debian’s experimental E17 packages. I commented out all other E17 repo’s from my source.list and installed the debian e17 package. It installs a minimal amount of related packages, and there doesn’t seem to be lot of e17 packages available in the experimental repo
sudo aptitude install e17
Reading package lists… [...]