vsftp登陆问题(非常急)

weishengsu123

请教各位大虾,我的redhat9.02在使用vsftp时报以下错误:
[root@redhat root]# ftp localhost
Connected to redhat.
220 redhat FTP server (Version 5.60) ready.
334 Using authentication type GSSAPI; ADAT must follow
GSSAPI accepted as authentication type
GSSAPI error major: Miscellaneous failure
GSSAPI error minor: No credentials cache found
GSSAPI error: initializing context
GSSAPI authentication failed
334 Using authentication type KERBEROS_V4; ADAT must follow
KERBEROS_V4 accepted as authentication type
Kerberos V4 krb_mk_req failed: You have no tickets cached
Name (localhost:root):
530 Must perform authentication before identifying USER.
Login failed.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp>;
请大虾帮忙解决