5.7. LIDS complains that it can't write to my modules.dep file during startup. What's wrong?

This happens when you protect /lib as read only (a good thing to do). The error received is something similar to:
LIDS: depmod (3 12 inode 16119) pid 13203 user (0/0) on tty2: Try to open /lib/modules/2.2.18/modules.dep for writing,flag=578
This occurs during startup because the /etc/rc.d/rc.sysinit init script tries to recreate all of your module dependencies. Normally this is not needed because the module dependencies don't change unless you add, change, or delete modules. The error is harmless, but if you don't like seeing it, you can simply comment out the line in your /etc/rc.d/rc.sysinit script that recreates the module dependencies (Look for depmod -a or something similar).