Is there a known reason why heavy IDE load (or possibly heavy CPU load in copying disk to disk) would cause network connections over ppp and diald to die? (This is with kernel 2.4.18 on woody.) I know that burning CDs on my IDE CD-RW drive causes serial port input overruns because of some kernel or IDE problems. Does heavy disk use (on an IDE controller with DMA disabled) also cause serial-port problems? Thanks, Daniel