"Download updates" unavailable after connecting to WiFi

[Gema Gomez]

The "Download updates while installing" option is grayed out when there is no network connection. In a laptop, you can connect in the next screen and should be able to come back and select it later, when you have already connection. But when you click Back after connecting to the network, the option is still unavailable to select.

Steps to reproduce:
1) Start installation on a laptop that will use wireless for the installation.
2) Go further with the installation until the wireless connection screen
3) Click on Back to select the "Download updates while installing" option now, not able to do it.

Build details:

DistroRelease: Ubuntu 11.10
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic x86_64
ApportVersion: 1.22.1-0ubuntu2
Architecture: amd64
Date: Tue Sep 13 14:15:48 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110913)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[C de-Avillez (hggdh2)]

Marking critical/milestoning to beta2 -- Ev can re-milestone, if needed, but this is important enough.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubiquity - 2.7.30

---------------
ubiquity (2.7.30) oneiric; urgency=low

  [ Harald Sitter ]
  * [KDE] Fix language selection comobox position within grid (LP: #743062)
  * [KDE] Make intro label miminum expanding, otherwise word wrap will not
    work for vast amounts of text

  [ Evan Dandrea ]
  * Unset UBUNTU_MENUPROXY so our custom panel doesn't lose its
    indicators (LP: #837287).
  * Port the panel to GTK3.
  * Manually connect the activate-link signal on the advanced
    partitioning tool link on the automatic partitioning page.
    GtkBuilder signal mapping appears to be broken (LP: #852054).
  * The first partitioning page does not translate its options ahead of
    time, so ensure that the placeholder text isn't so long as to create
    the installer window to grow excessively large before partitioning
    is reached (LP: #837406).
  * Use the new network-manager interface on the prepare page to disable
    options that need an Internet connection when one is not available
    (LP: #848938).
  * Update translations from Launchpad.
  * Automatic update of included source packages: flash-kernel
    2.28ubuntu33.

  [ Stéphane Graber ]
  * Change wallpaper C program to accept a path to a wallpaper as a parameter.
  * Update ubiquity-dm to set the right wallpaper for Edubuntu.
  * Fix ibus in Ubiquity (LP: #838850)

  [ Aurélien Gâteau ]
  * gui/qt/stepKeyboardConf.ui
   - Put keyboard variable combobox on separate line (LP: #851160)

  [ Jonathan Riddell ]
  * kde_ui.py
   - Fix breakage in debfilter crash dialogue
 -- Evan Dandrea <email address hidden> Mon, 19 Sep 2011 19:37:28 +0100