After installing Adobe Reader 9, I receive the following error message when trying to run Adobe Reader.
/opt/Adobe/Reader9/Reader/intellinux/bin/acroread error while loading shared libraries: libgdk_pixbuf_xlib-2.0.so.0 cannot open shared object file: No such file or directory
Note that I had to run it from the console to see this error message. Running Adobe Reader from the desktop shortcut doesn't do anything; the application simply doesn't open.