Running valgrind-3.1.0-2 on a gtkmm program I'm writing, I get --662-- WARNING: unhandled syscall: 311 --662-- You may be able to write your own handler. --662-- Read the file README_MISSING_SYSCALL_OR_IOCTL. Followed the steps in README_MISSING_SYSCALL_OR_IOCTL and with some help from the valgrind mailing list it turns out there are some system calls in /usr/linux/asm/unistd.h that valgrind expects, but are not present in kernel-2.6.17-1.xxx. Specifically, 311 refers to set_robust_lists. However, this system call IS present in kernel-2.6.17-7. I don't want to compile the kernel, if I don't have to. Does anyone know when the newer kernel might be available in FC5?