When I run Wubi, that is, the Windows installer for Ubuntu 12.04 LTS, I'm given a pull-down menu in the download dialog-box. It offers, pre-set, an Installation Size of 18 GB, although one can pull down the menu and choose, it seems, anywhere from 5 GB to 30 GB. Which size should I choose?
And why isn't this feature mentioned in the download instructions that are linked to from the download page? I must admit, I am miffed by this apparent omission.