The crash is occurring in JNI code from SIGAR, the native library the Agent uses for process scans, system metrics, etc. I notice you are running an x86 JVM, but your system is x86_64. I would try with an x86_64 JVM instead. That will cause the x86_64 SIGAR shared library to be used, rather than the x86 one. I'd also recommend using a 1.6, rather than 1.5, JVM if possible. We'll probably be dropping support for 1.5 sometime in the not too distant future.
o.k., with a 64-bit JVM it seems to work.