I recently upgraded to FC14. the first time I started pd SELinux didn't like it (though I haven't noticed any operational problems yet). This is the brief error message:
SELinux is preventing /usr/bin/pdextended from using the 'execstack' accesses on a process.
***** Plugin allow_execstack (53.1 confidence) suggests
If you do not think /usr/bin/pdextended should need to map stack memory that is both writable and executable. Then you need to report a bug. This is a potentially dangerous access.