If you recently bought a Nexus 4 or upgraded your phone to Android 4.2 you’ll probably be missing the “Developer options” in your settings menu. Fortunately, Google didn’t remove the developer options from their new version of Android, they just hid it from prying eyes.
In a recent KDE upgrade, the katepart text editor, which powers, kwrite, kile and kate, has been modified to open files with long lines as read only. Sometimes it will tell you about this in a warning, sometimes you'll just notice that you cannot modify the file. It also turns out that the maximum line length is actually very short: 1024 characters. You will have no trouble finding log files with lines longer than this.
Using pgfplots allows you to quickly create very beautiful plots, that look like they belong to your paper, by automatically using the correct fonts and styles. It does this by using the latex compiler to make the figures. This approach is very powerful but has a major drawback: the latex compiler was not made to do this. As a result, latex tends to run out of memory very fast, and projects with a lot of pgfplots tend to take a long time to compile.
We didn't come up with this one, but it's a very handy reference guide. In good medieval monastery style, we're copying it here in order to safeguard this information for future generations.
KDE (and linux) in general has a very elaborate system of guessing the file type of your file, that depends on both the file extension and the file contents. In 99% of the cases these rules work, unfortunately the other 1% has been annoying me for quite some time.