The debuginfo-install kernel is technically only needed for probing the kernel (which admittedly is often where the juicy events come from). If you are only doing user space probing you only need the relevant user space debuginfo.
Also SystemTap comes with "stap-prep" which does the above for the kernel case plus sanity checks (modulo a bug on Fedora 13, which has been fixed upstream: https://bugzilla.redhat.com/show_bug.cgi?id=596083)