I installed EAP5 from GUI installer on Solaris 10. I installed natives for x86_64 architecture. After installation I tried to compare installed natives with natives from standalone zip pack. I found out that installed natives don't match those from standalone zip.

When started the server, the server didn't find installed natives:

[org.apache.catalina.core.AprLifecycleListener] (main) The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /qa/services/hudson/EAPCR3/native/lib64

The difference between installed native pack and standalone pack, is that in installed natives there aren't created symbolic links to proper files. The installer was probably unable to create symbolic links to proper files.