Comment 2 for bug 555525

I have. A few times now.

I have some more logging info for you:

Apr 5 12:13:00 station-1 lsassd[7679]: 0x7f21ab733710:[AD_JoinDomain() provider-main.c:1303] Affinitized to DC 'tarot.ad.isillc.com' for join request to domain 'ad.isillc.com'
Apr 5 12:13:00 station-1 netlogond[2123]: [LWNetSrvGetDCTimeFromDC() dcinfo.c:555] Failed ldap search on tarot.ad.isillc.com error=40286
Apr 5 12:13:00 station-1 netlogond[2123]: [LWNetSrvGetDCTimeFromDC() dcinfo.c:555] Failed ldap search on domino.ad.isillc.com error=40286
Apr 5 12:13:00 station-1 lsassd[7679]: 0x7f21ab733710:[LsaSyncTimeToDC() join.c:454] Error code: 40286 (symbol: LW_ERROR_LDAP_SERVER_DOWN)
Apr 5 12:13:00 station-1 lsassd[7679]: 0x7f21ab733710:[LsaNetJoinDomain() join.c:97] Error code: 40286 (symbol: LW_ERROR_LDAP_SERVER_DOWN)
Apr 5 12:13:00 station-1 lsassd[7679]: 0x7f21ab733710:[AD_JoinDomain() provider-main.c:1322] Error code: 40286 (symbol: LW_ERROR_LDAP_SERVER_DOWN)
Apr 5 12:13:00 station-1 lsassd[7679]: 0x7f21ab733710:[AD_ProviderIoControl() provider-main.c:3006] Error code: 40286 (symbol: LW_ERROR_LDAP_SERVER_DOWN)
Apr 5 12:13:00 station-1 lsassd[7679]: 0x7f21ab733710:[LsaSrvProviderIoControl() provider.c:86] Error code: 40286 (symbol: LW_ERROR_LDAP_SERVER_DOWN)
Apr 5 12:13:00 station-1 lsassd[7679]: 0x7f21ab733710:[LsaSrvProviderIoControl() provider.c:112] Failed to run provider specific request (request code = 8, provider = 'lsa-activedirectory-provider') -> error = 40286, symbol = LW_ERROR_LDAP_SERVER_DOWN, client pid = 24922
Apr 5 12:13:00 station-1 lsassd[7679]: [IPC] (assoc:0xefb270 >> 0) CALL RES LSA_R_PROVIDER_IO_CONTROL_FAILURE: <LSA_IPC_ERROR>#012{#012 .dwError = 40286#012 .pszErrorMessage = <null>#012}
Apr 5 12:13:00 station-1 lsassd[7679]: [IPC] (assoc:0xefb270) Dropping: Connection closed by peer

It looks like it's failing on trying to CLDAP query the DCs. But I don't know why. Both site DCs are reachable, and Windows boxes are working fine. Also, downgrading back to 5 fixes it.