My steps:
1) I started the installer on the live DVD
2) I got to the point of partitioning, where I noticed I needed advanced features (resizing and moving Windows partitions)
3) I started gparted and performed the required tasks and also created the new partitions for Linux (but I did not close gparted!)
4) after switching back and forth in the installer, it recognized the new partitions, so I chose them with the proper mount points
5) the installer continued to the point of choosing a keyboard layout
6) When clicking "Next", it hang indefinitely with a "busy" mouse cursor.
Eventually, I killed the installer, restarted the PC (waited for Windows to repair itself) and rerun the Ubuntu installer. This time, it succeeded. My assumption is that gparted held a lock of the partitions or something, and the installer did not notice it, warn about,...
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4
Uname: Linux 3.8.0-27-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
Date: Mon Aug 19 18:51:17 2013
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
InstallationDate: Installed on 2013-08-16 (2 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)
Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version. If you test it and it is still an issue, kindly upload the updated logs by running only once:
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