<failed to verify krb5 credentials: Request is a replay> error

[FM]

Hello,
I configure subversion (web_dav) to use mod_auth_kerb
in shell, no prob it's using ticket_cache but from eclipse (for ex), it 
use basic auth.
Some  commits fail because of this error :
"failed to verify krb5 credentials": Request is a replay

I know that it is a kdc error but what does it mean ? Do you know a work 
around ?

thanks !