According to this email (spanish) Ubuntu includes non-free components by default, and users don’t know about this situation.
I’m using Hardy Heron up to date and I wanted to figure out about this potential problem using a useful tool: vrms.
mruiz@numbat:~$ vrms -s
human-icon-theme
linux-restricted-modules-2.6.24-16-generic
linux-restricted-modules-common
linux-restricted-modules-generic
skype
tangerine-icon-theme
unrar
OK… let’s review the results.
linux-restricted-* is part of the restricted section. unrar is from multiverse and skype is a third-party package. But human-icon-theme and tangerine-icon-theme are part of main.
Then, I can assume that Ubuntu includes non-free components by default without inform to their users. Or not ?
EDIT: To be accurate, I changed non-free software by non-free components