After installing the APM for SSO Policy Server agent, the instructions have you run xpsconfig, and then add to SMAuditHandlers the entry libEventIntroscopeprovider.so.
On starting the Policy Server, it then fails to start - seemingly hanging at a certain point over and over again.
Rerunning xpsconfig results in a large memory map, starting with an entry similar to:
libIntroscopeNativeDataAPI was loaded from /disk/apps/policyserver/siteminder/lib
*** glibc detected *** XPSConfig: corrupted double-linked list: 0x00000000020fdcd0 ***