--- usr/portage/eclass/php5_1-sapi.eclass	2007-04-24 20:40:39.000000000 +0000
+++ usr/local/portage/eclass/php5_1-sapi.eclass	2007-05-09 17:40:31.000000000 +0000
@@ -416,7 +416,7 @@
 	phpconfutils_extension_without	"iconv"			"iconv"			0
 	phpconfutils_extension_with		"informix"		"informix"		1
 	phpconfutils_extension_disable	"ipv6"			"ipv6"			0
-	phpconfutils_extension_with		"kerberos"		"kerberos"		0 "/usr"
+	phpconfutils_extension_with		"kerberos"		"kerberos"		0 "`/usr/bin/krb5-config --prefix`"
 	phpconfutils_extension_disable	"libxml"		"xml"			0
 	phpconfutils_extension_enable	"mbstring"		"unicode"		1
 	phpconfutils_extension_with		"mcrypt"		"crypt"			1