I just downloaded Ubuntu 12.04.3 LTS. I can get it to boot and all that. When i try to install it though is whats my problem. It opens up and its preparing to install ubuntu.. It says for the best results make sure your computer has 4.5gb of space, plugged in, connected to the internet. Of which i am on all of those. But when i go to click continue. It does absolutely nothing. I get stuck with the spinning wheel like its trying to do something, even though it is doing nothing. My laptop recently pretty much crashed on me. I can't load windows anymore. I do believe its not even on the hard drive anymore. Anyways. Im having this problem, i literally have looked everywhere i can to find an answer, and got no where. Its really annoying. My desktop is so god damn slow. Please someone have an answer for me.
I had the same problem.
Installation was stopped in the end, at grub.
I tried 20 times from downloading from the official www.ubuntu.com but every time it failed.
I finally tried an older download (he download it one month before i tried ) from a friend's CD and i finally installed it.
The first files that was online were good but from November until today something is wrong in this files. I download it first time in August i think and tried again in November.
I think that the problem is at the ubuntu .iso .
The size of my friends iso was 708 MB and mine (November edition) was 700 MB
Good Luck with this :)