[PROBLEM] System freezes after a while

[rph-r]

does this error in /var/log/samba/log.wb-MOODE has to do with the issue?
(it is repeated periodically)

Code:

../../source3/rpc_server/rpc_ncacn_np.c:454(rpcint_dispatch)
 rpcint_dispatch: DCE/RPC fault in call lsarpc:32 - DCERPC_NCA_S_OP_RNG_ERROR