A quick remedy (as tweeted here) is to install the package from the Debian Sid distribution: kbibtex.
To install
sudo dpkg -i kbibtex...

The package should be compatible with Ubuntu 11.10, and seems to work fine.

The 0.4 version has improved a lot and has a very useful online search tool for acquiring bibtex files. Google scholar and other data bases can be used.
Other tools include reference preview (though bibtex2html) and PDF preview.

A better solution is to use convert tool that is a part of the powerful Imagemagick toolkit:

convert image.jpg -trim -bordercolor White -border 20x10 +repage cropped_image.jpg
This command reads the original file, removes (trims, crops) white borders, adds 20 pixel white borders horizontally and 10px vertically, and stores the file as cropped_image.jpg.

It is also possible to process all image files in the current directory with the following one line command:
for i in `ls *.jpg`; do convert $i -trim -bordercolor White -border 20x10 +repage cropped_`basename $i`; done

If you want to convert to another image format, it can be done conveniently at the same time (-quality option controls the jpg quality):
for i in `ls *.gif`; do convert $i -trim -bordercolor White -border 20x10 -quality 92 +repage cropped_`basename $i gif`jpg; done
Above basename utility is used for trimming suffix from the file name.

Extract all raster images from pdf file, save in jpg format (creates bar-000.jpg, bar-001.jpg, etc.):
pdfimages -j file.pdf image

The -j option is to convert the images to jpeg format if possible.
Other options can be found in the manual.

Split a pdf file to individual pages (generates: page01.pdf, page02.pdf, etc.)
pdftk original.pdf burst output page%02d.pdf

Split a pdf file to two parts:
pdftk original.pdf cat 1-3 output threeFirstPages.pdf
pdftk original.pdf cat 4-end output rest.pdf

Merge multiple pdf files to one:
pdftk first.pdf second.pdf third.pdf cat output 123.pdf

Many more examples can be found on pdflabs examples page.

The options are:
-r Makes it recursive for subfolders
-l1 set maximum recursion, 1 levels of subfolders
-nd no directories — copies all matching files to current directory, discards directory information
-nc Do not download it file already exists
-A.pdf Accept only certain files (with pdf suffix in this case). Specify comma-separated lists of file name suffixes or patterns.

An article can be found on the internet via the address dx.doi.org/ followed by the DOI, e.g. http://dx.doi.org/10.1016/j.ocemod.2004.08.002. However, it takes a while to browse the publishers website, locate the appropriate bibtex file and save it to disk.

Here is a very handy Python script that fetches a bibtex file from NASA’s Astrophysics Data System using the article’s DOI.

It requires Python Beautiful Soup XML/HTML parser.
In Ubuntu-like linux distributions it can be installed easily:
sudo apt-get install python-beautifulsoup

Example:

>>doi2bibtex.py 10.1016/j.ocemod.2004.08.002
@ARTICLE{2005OcMod...9..347S,
author = {{Shchepetkin}, A.~F. and {McWilliams}, J.~C.},
title = "{The regional oceanic modeling system (ROMS): a split-explicit, free-surface, topography-following-coordinate oceanic model}",
journal = {Ocean Modelling},
year = 2005,
volume = 9,
pages = {347-404},
doi = {10.1016/j.ocemod.2004.08.002},
adsurl = {http://adsabs.harvard.edu/abs/2005OcMod...9..347S},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}


Here’s a fix (for Natty):

Go to System settings->Shortcuts and Gestures->Global Keyboard Shortcuts and select Plasma Desktop Shell in the KDE component box. Look for Systemtray-Klipper-10 and assign Ctrl-Alt-V to it. Most likely this will create a conflict with Klipper keyboard shortcuts, accept to force the change.

Pressing Ctrl-Alt-V should now bring up the Klipper pop-up menu. To select an item in history using only keyboard, choose with up/down arrows. The press Enter (to choose the item), press Esc (to close the pop-up). This is different than before when Enter also closed the pop-up. Note that the chosen item is not indicated in any way in the pop-up. Hopefully this will change in the future.

This hassle is all due to the fact that same shortcut is defined in (at least) two places. As plasma desktop shell is handling the shortcuts now, the old setting in Klipper section is simply ignored, but still present.

Solution:
Make sure that Mactel-support PPA repository in enabled. It is usually deactivated during the upgrade process.
Install nvidia-bl-dkms package:
sudo apt-get update 
sudo apt-get install nvidia-bl-dkms

Here’s how I got it done (MATLAB R2009a in Ubuntu 10.04 Lucid):
1) Install some 32-bit libraries:
sudo apt-get install ia32-libs lib32ncurses5
2) Mount the CD (e.g. open the content in a file manager)
3) Install MATLAB, force to use the 32-bit executable:
sudo /media/cdrom0/install_unix.sh -glnx86
Install matlab to some convenient place, typically /usr/local/matlab (assumed here).
The installation will fail, complaining about 64-bit java.
4) Fix the java problem (change the path according to your installation):
sudo ln -s /usr/local/matlab/sys/java/jre/glnx86/ /usr/local/matlab/sys/java/jre/glnxa64
5) Register your matlab
sudo /usr/local/matlab/bin/activate_matlab.sh
6) You can now run MATLAB:
matlab -glnx86

I have Apple Macbook Pro (macbook5,5) which uses bcm5974 driver. Apparently the driver is included in the recent linux kernels, but it can also be installed from the Mactel Support repository. First thing to do is to check if the drive is loaded in the kernel:
lsmod | grep bcm5974
If the command doesn’t print anything, you need to install the driver.

If the driver is installed, like in my case, but the KDE configuration is still disabled, check if xserver synaptics package is installed:
sudo apt-get install xserver-xorg-input-synaptics

The KDE touchpad configuration module is provided by the package kde-config-touchpad.