this existed in 4.2 and i hoped it would magically fix itself in 4.3, but
no such luck.
if you do a custom install and select the everything package (i'm lazy and
don't care if i burn disk space :-), when it gets to cd 4, it will
suddenly need disk 1 again to install the comps package and then go back
to 4 for the rest of the install. it seems like the comps package would
have been installed very early on in the process, so this seems very odd.
i can look at the install log if that would do someone some good.