I see this problem as well. I'm running on a T40, with a DVD/CDRW in
the ultrabay, and -CURRENT as of this morning. At boot, it hangs
immediately after
ad0: 35174MB [71465/16/63] at ata0-master UDMA100
ata1: resetting devices ..
done
Backing out the most recent checkin to sys/dev/ata/ata-queu
Last week, Nate Lawson reported a panic in 5.1-CURRENT as described
below. However, despite the apparent resolution, doing a clean install
on an IBM t40 with the most recent snapshot from
snapshots.jp.freebsd.org still results in the same panic for me.
I can provide more information as necessary.
