Some old VGA cards have (very) broken default fonts (esp. original Mach64 cards); unfortunately, the kernel doesn't load a font unless fbcon is enabled, and RH6.2's US locale doesn't load a font by default. Proposed solution is to set a value for SYSFONT at the top of /sbin/setsysfont; default-8x16 would be a satisfactory choice, but UniCyr-sans-8x16 looks =much= nicer!
Set "SYSFONT" to something like "UniCyr-sans-8x16" or "default8x16" in your /etc/sysconfig/i18n file, and rc.sysinit will do this for you. Doing this by default would really screw up the folks out there with EGA or old-style Hercules boards, and be of no use to users of serial terminals.