I haven't a clue myself, but the folks over at the A1 dev lists can probably help you.
Have you specified a mount point? Something in /mnt/cdrom ?
Not sure what I'm talking about here...
Also, what Linux distro are you using? I was ready to utterly destroy Debian until I switched to YDL, which I merely strongly dislike.
And yes, roll on OS4. Linux will not be staying on my hard drive 10 minutes beyond the arrival of the prerelease CD. The only reason I'd consider keeping it would be for MOL - Hopefully someone can put together an install CD with a base Linux install that boots straight into MOL. Or better yet, turn it into MOA.