Bashisms

[Yamakaky]

Your shell scripts use #!/bin/sh, but it should be #!/bin/bash. On my computer, sh is a link to dash and not bash, so some bash features are not supported.
http://manpages.ubuntu.com/manpages/natty/man1/checkbashisms.1.html
While I'm here, you should take a look to http://redsymbol.net/articles/unofficial-bash-strict-mode/, it's really useful. And #!/usr/bin/env bash is even better.

[lethosor]

Which scripts do you mean? I know I've successfully tested distro_fixes.sh with dash and zsh many times. (Maybe you're using an outdated version, though - if you haven't, try grabbing the latest copy from this repo.)

[Yamakaky]

Sorry, the script comes from the aur package.

[Yamakaky]

In fact, the problem is present in the package downloadable at http://lazynewbpack.com/linux/. Maybe make a release?