Firewire problem I think -

Question

Firewire problem I think - I have a Sony Vaio laptop, the firewire port is 4 pin, it is connected to a LaCie CD Burner via 6 pin and the burner is daisy chained to a AcomData external hard drive via 6 pin. If I burn a CD from files on my Sony laptop hard drive to the LaCie everything works fine (fast). Transfering audio files from the LaCie to the Sony hard drive is quick. Moving audio files from the Sony hard drive to the AcomData drive through the described connection is also quick. However trying to burn a CD from audio files on the AcomData external drive through the described connection to the LaCie burner is very very slow if it works at all. Any idea's?Thanks Pat