One user requested Matlab on a CentOS 5 system. The installation was not as smooth as before. When I popped in the installation disc and ran the installation script on the disc, I got a lot of errors about permission denied. The problem was the disc was mounted by the system using noexec option, therefore I cannot exec any programs on the disc. To fix the problem, I unmounted the disc and mounted the disc manually. Here are the steps (my DVD drive is /dev/hdb).
umount /dev/hdb mkdir /media/dvd mount /dev/hdb /media/dvd
The second problem I ran into is libXp.so.6 is missing. Fortunately, the yum repository has it. A simple yum install fixed it.
yum -y install libXp