The other problem with this license is that
+ * This sample program was written and put in the public domain
doesn't seem to be consistent with
+ * You may also modify this program and distribute copies of+ * it provided that you include prominent notices stating + * that you changed the file(s) and the date of any change, + * and that you do not charge any royalties or licenses for + * its use.+ */
under my understanding of "public domain"
