The detection of a SCSI tape in rc.sysinit is obsolete, as the st.o module does not exist anymore (statically linked). On systems with a SCSI tape you now see an error during the boot sequence saying that the st module is not found. Fix: just remove the 11 corresponding lines in rc.sysinit.
Yup, this is fixed in the latest initscritpts in Raw Hide - basically it checks for the st device and only loads a module if the module exists.