I can't install Ubuntu Server 8.04.3 in VirtualBox 3.0.6...
I tried first in my laptop (HP Pavilion dv5-1160br) using Windows 7 64-bit as host and Ubuntu Server 8.04.3 LTS 32-bit as guest.
Then I tried in the same laptop but this time using Ubuntu 9.04 64-bit as host.
In both cases the installation must be aborted when the following message appears: "No installable kernel was found in the defined APT sources."
But the same installation using a Ubuntu Server 8.04.3 LTS (32-bit or 64-bit) as host and made via headless server works perfectly...
Any ideas?