5 mysterious surveys created

When you look at the Admin=>Modules (Activities in 1.7 and on) you see that the count of Surveys is 5 when no surveys have been created anywhere on the site. This is the case with a completely new site. Checking the database shows that they have a course id of 0. I guess that these may be created for a reason, but in that case they should not form part of the count.

SQL dump as follows....

mysql> select * from mdl_survey\G

• • • • • • • • • • • • • • • • • • • • • • • • • • • 1. row ***************************
                                                      id: 1
                                                      course: 0
                                                      template: 0
                                                      days: 0
                                                      timecreated: 985017600
                                                      timemodified: 985017600
                                                      name: collesaname
                                                      intro: collesaintro
                                                      questions: 25,26,27,28,29,30,43,44
                                                    • 2. row ***************************
                                                      id: 2
                                                      course: 0
                                                      template: 0
                                                      days: 0
                                                      timecreated: 985017600
                                                      timemodified: 985017600
                                                      name: collespname
                                                      intro: collespintro
                                                      questions: 31,32,33,34,35,36,43,44
                                                    • 3. row ***************************
                                                      id: 3
                                                      course: 0
                                                      template: 0
                                                      days: 0
                                                      timecreated: 985017600
                                                      timemodified: 985017600
                                                      name: collesapname
                                                      intro: collesapintro
                                                      questions: 37,38,39,40,41,42,43,44
                                                    • 4. row ***************************
                                                      id: 4
                                                      course: 0
                                                      template: 0
                                                      days: 0
                                                      timecreated: 985017600
                                                      timemodified: 985017600
                                                      name: attlsname
                                                      intro: attlsintro
                                                      questions: 65,67,68
                                                    • 5. row ***************************
                                                      id: 5
                                                      course: 0
                                                      template: 0
                                                      days: 0
                                                      timecreated: 985017600
                                                      timemodified: 985017600
                                                      name: ciqname
                                                      intro: ciqintro
                                                      questions: 69,70,71,72,73
                                                      5 rows in set (0.00 sec)