The kerberos client received a KRB_AP_ERR_MODIFIED errorhttp://msmvps.com/blogs/vandooren/archive/2009/04/02/the-kerberos-client-received-a-krb-ap-err-modified-error.aspxThis is what I got in the event logs yesterday afternoon: Event Type: Error Event Source: Kerberos Event Category: None Event ID: 4 Computer: SE-SMURF01 Description: The kerberos client received a KRB_AP_ERR_MODIFIED error from the server PC-BLABLA09enCommunityServer 2008.5 SP2 (Build: 40407.4157)