Solved after donwloading the last version of unetbootin from the official unetbootin webpage (v494). The unetbootin from the ubuntu's repositories is out of date.
-- maverick-netbook-i386.iso fatal error booting https://bugs.launchpad.net/bugs/626164 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs