Hanging at boot

[Manfred Lotz]

Hi there,

Last time (around middle of October) when I tried out a new current kernel
it was hanging at boot time at acd1

ata1 is: 
acd1: DVD-ROM <TOSHIBA DVD-ROM SD-M1612> at ata1-slave UDMA33


I tried it again yesterday. Now acd1 seems to be fine. However it hangs
at acd2.After the following message
 acd2: CD-RW <MITSUMI DW-7801TE> at ata3-master UDMA33

it stops working. No error message is showing up.

What data could I provide to help track it down?

Manfred