I just bought this PC: Sedatech PC Office and right away I am trying to install Ubuntu 12.10 with the Windows Installer.
Everything goes fine until the end of installation step 5. At that point the progress window disappears and nothing happens, nothing has been installed and all is almost exactly as it was just before double clicking on wubi.exe. I say "almost exactly" because in the partition where I ask Ubuntu to be installed (different than the Windows 7 partition) there is an ubuntu folder with a couple of files and folders, but nothing usable. Needless to say, there is no dual boot when I reboot.
I have repeated this again and again. Any ideas?