So, I did successffully instaled FreeBSD 8.0, !BUT(/etc/src.conf):
I've tried with both 8.0-RELEASE && 8.0-STABLE sources and it will always fail, if kerberos5, will be built. 
So, now I am on 8.0-STABLE
This is error(both 8.0-RELEASE && 8.0-STABLE), just before failing:
Additionally...(ACPI related), at the boot time I get this:
Code:
WITHOUT_KERBEROS=YES

So, now I am on 8.0-STABLE
This is error(both 8.0-RELEASE && 8.0-STABLE), just before failing:
Code:
/usr/src/kerberos5/lib/libgssapi_krb5/gss_krb5.c: In function 'gsskrb5_extract_authz_data_from_sec_context':
/usr/src/kerberos5/lib/libgssapi_krb5/gss_krb5.c:591: warning: implicit declaration of function 'der_get_oid'
/usr/src/kerberos5/lib/libgssapi_krb5/gss_krb5.c:601: warning: implicit declaration of function 'der_free_oid'
/usr/src/kerberos5/lib/libgssapi_krb5/gss_krb5.c:614: warning: implicit declaration of function 'der_length_oid'
/usr/src/kerberos5/lib/libgssapi_krb5/gss_krb5.c:622: warning: implicit declaration of function 'der_put_oid'
make: don't know how to make /usr/obj/usr/src/tmp/usr/lib/libgssapi.a. Stop
*** Error code 2
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
Additionally...(ACPI related), at the boot time I get this:
Code:
acpi_button0: <Power Button> on acpi0
atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
ACPI Warning: \\_SB_.PCI0.SBRG.FDC_._FDE: Return type mismatch - found Package, expected Buffer 20090521 nspredef-1051