Enable suid_dumpable (core dumps of setuid binaries). This has always been safe for us, as we set a core pipe handler, but the kernel now protects against one not being set: http://kernel.ubuntu.com/git?p=ubuntu/ubuntu- raring.git;a=blob;f=Documentation/sysctl/fs.txt;h=88152f214f48cb69c6 43d4bf2ff2ac9a61ad2eb0;hb=HEAD (LP: #1194541).