Hi All, I am trying to install pulse audio but get the following error: # ./configure checking whether a program can dlopen itself... yes checking whether a statically linked program can dlopen itself... yes checking whether stripping libraries is possible... yes checking if libtool supports shared libraries... yes checking whether to build shared libraries... yes checking whether to build static libraries... no checking ltdl.h usability... no checking ltdl.h presence... no checking for ltdl.h... no configure: error: Unable to find libltdl version 2. Makes sure you have libtool 2.2 or later installed. # # yum install libtool Loaded plugins: refresh-packagekit Setting up Install Process Package libtool-2.2.6-11.fc11.1.i586 already installed and latest version Nothing to do # Why is it not found if installed? Thank you for your kind help. Regards jh