Comment 2 for bug 410368

No, I did not have Ubuntu installed prior to attempting to install it by using Wubi.

First the installation size dropdown is filled as it should be. But after switching a few times between possible installation drive options, there are duplicate values in the installation size dropdown. As you can see in the attached screenshots, after selecting drive C for te second time (after selecting a different drive), there are more (and duplicate) values in de dropdown.