Ubuntu setup process crash

Like I always say, Ubuntu was great when you wanted to get started with Linux when the only OS you used was Windows.
If today you want to try Ubuntu, you can start with a live CD or you can install it next to Windows, but what happens if the setup process fails ?
Ubuntu goes into an infinite loop if your username has and underscore character (_), it’s been more than two years and the problem still exists !

There is also another problem, on an old computer I tried to install Xubuntu, the setup process crashed without displaying a message because the slideshow wouldn’t work.
I had to uninstall “ubiquity-slideshow-xubuntu” on the Live CD with this command:
[code language=”bash”]
sudo apt-get remove ubiquity-slideshow-xubuntu
Installing Ubuntu has become random, and I really hope that in the future we won’t have to deal with unrecoverable errors.