This bug was fixed in the package ubiquity - 2.9.8
ubiquity (2.9.8) precise; urgency=low
[ Colin Watson ]
* GTK frontend:
- Some automatic partitioning options change the text on the next button
to "Install Now". Make sure that this works even when changing to the
automatic partitioning page with one of those options automatically
selected (LP: #766265).
* Automatic update of included source packages: base-installer
1.122ubuntu3, partman-auto 93ubuntu18, partman-basicfilesystems
[ Stéphane Graber ]
* Use username associated with uid 999 rather than hardcoding 'ubuntu'
in Ubiquity. This is important now that casper sets the username and
hostname based on media name. (LP: #290351)
-- Colin Watson <email address hidden> Thu, 15 Dec 2011 18:57:10 +0000