Or edit /etc/inittab and add a 4 to c1-5 in these lines
c1:1235:respawn:/sbin/agetty 38400 tty1 linux
c2:1235:respawn:/sbin/agetty 38400 tty2 linux
c3:1235:respawn:/sbin/agetty 38400 tty3 linux
c4:1235:respawn:/sbin/agetty 38400 tty4 linux
c5:1235:respawn:/sbin/agetty 38400 tty5 linux
c6:12345:respawn:/sbin/agetty 38400 tty6 linux
That's what controls which terminals are started at what runlevel and Patrick turned off all but 6 in runlevel 4 for whatever reason. (I mean, 6 was left open because there were problems with turning them all off - but I don't get why to turn *any* off.)
Better than either option is just to switch to runlevel 3 and leave it at that. Startx!