If, after updating Uplink, you get the following error message:
error while loading shared libraries: libjpeg.so.62: cannot open shared object file: No such file or directory

The solution is to install the package libjpeg62. If you are on a 64-bit system, make sure to install the 32-bit version!

On a 32-bit Ubuntu system:
sudo apt-get install libjpeg62

On a 64-bit Ubuntu system:
sudo apt-get install libjpeg62:i386