In Kodi/XBMC/Boxee, Canon .CR2 and other raw photo file thumbnailing speed is pretty slow. On a slow computer, using a large number of threads to generate thumbnails in parallel can use up a lot of CPU and memory and lock up the UI.
The number of threads used for thumbnailing can be reduced by creating a
.xbmc/userdata/advancedsettings.xml file with these contents:
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