After installing ANSYS 11 SP1 on CentoOS 5.2 x86_64 and trying to start some new job I got the error that libXm.so.3 is missing. Ansys does not come with it, so I installed it form CentOS5.2 dvd. To be specific, I installed the following package that contains this library:
openmotif22-2.2.3-18.x86_64.rpmJust after this I had another error: "cannot restore segment prot after reloc: Permission denied". This is due to SElinux. Therefore, I disabled SElinux in CentOS5.2 using Security Level and Firewall in Gnome System->Administration. No reboot was required.