Natty 20110302, apt require insertion of /media/cdrom during a usb installation, causing lock and hard reboot

[Fabio Marconi]

Binary package hint: ubiquity

Hello
Installation hang during downloading packages with apt searching in /media/cdrom during a Usb installation.
Trying to install on a whoole disk with downloading of third party software.
Reproduced two times.

See attached screenshots

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: ubiquity 2.5.22
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
Architecture: amd64
Date: Thu Mar 3 11:51:06 2011
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Fabio Marconi (fabiomarconi)]

Mar 3 11:42:24 ubuntu ubiquity: #015Media change: please insert the disc labeled
Mar 3 11:42:24 ubuntu ubiquity: 'Ubuntu 11.04 _Natty Narwhal_ - Alpha amd64 (20110302)'
Mar 3 11:42:24 ubuntu ubiquity: in the drive '/media/cdrom/' and press enter
Mar 3 11:42:24 ubuntu ubiquity:

[Fabio Marconi (fabiomarconi)]

Clicking on Skip button don't makes it working.
I've to abort the installation
Usb key created with startup disk creator 0.2.23 in Natty 20110301 amd64, with persistence.
Good work
Thanks
Fabio

[Fabio Marconi (fabiomarconi)]

Screenshot of second installation