Upgrading from Ubuntu 11.04 "Natty Narwhal" to Ubuntu 11.10 "Oneiric Ocelot" installs Ubuntu's Unity, which changes the configuration of the window switcher that is usually bound to Alt-Tab. Instead of switching between all windows, it now switches between applications.
These are instructions on how to revert the behavior back:
jpegtran in the Ubuntu 10.10 Linux distribution, you can run the following command in a terminal window/shell
sudo apt-get install libjpeg-progs
jpegtran allows lossless rotation of JPEG images. For example, you can losslessly rotate an image 90° counterclockwise by running:
jpegtran -rotate 270 input.jpg > output.jpg
Or you can losslessly rotate an image 90° clockwise by running:
jpegtran -rotate 90 input.jpg > output.jpg
monica-3.7-7mdv2011.0.i586.rpm binary RPM for
monica (a free monitor calibration tool for Linux) does not run in Ubuntu 11.10 (a.k.a. "Oneiric Ocelot").
./usr/bin/monica: error while loading shared libraries: libfltk.so.10: cannot open shared object file: No such file or directory