Hi list. Burning CDs or blanking CD-RWs as root user gives no warnings; as normal user always gives: cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2). cdrecord: WARNING: This causes a high risk for buffer underruns. cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler cdrecord: Permission denied. WARNING: Cannot set priority using setpriority(). cdrecord: WARNING: This causes a high risk for buffer underruns. This happens either running cdrecord directly or through k3b. So far I got no toasters: should I consider this warnings harmless? Thanks, Fabio