Bogus login errors in atlassian-jira security log file

2011-06-22 15:41:41,850 http-8080-4 anonymous 941x171x1 - 127.0.0.1 /rest/usermanagement/1/search HttpSession created [ul0equ]
2011-06-22 15:41:41,853 http-8080-4 anonymous 941x171x1 - 127.0.0.1 /rest/usermanagement/1/search login : 'Confluence' tried to login but they do not have USE permission or weren't found. Deleting remember me cookie.
2011-06-22 15:41:51,423 http-8080-1 anonymous 941x172x1 - 127.0.0.1 /rest/usermanagement/1/search HttpSession created [18g2gw4]
2011-06-22 15:41:51,432 http-8080-1 anonymous 941x172x1 - 127.0.0.1 /rest/usermanagement/1/search login : 'Confluence' tried to login but they do not have USE permission or weren't found. Deleting remember me cookie.
2011-06-22 15:41:51,551 http-8080-1 anonymous 941x173x1 18g2gw4 127.0.0.1 /rest/usermanagement/1/search login : 'Confluence' tried to login but they do not have USE permission or weren't found. Deleting remember me cookie.
2011-06-22 15:41:51,627 http-8080-1 anonymous 941x174x1 18g2gw4 127.0.0.1 /rest/usermanagement/1/group/user/direct login : 'Confluence' tried to login but they do not have USE permission or weren't found. Deleting remember me cookie.
2011-06-22 15:41:51,663 http-8080-1 anonymous 941x175x1 18g2gw4 127.0.0.1 /rest/usermanagement/1/group/child-group/direct login : 'Confluence' tried to login but they do not have USE permission or weren't found. Deleting remember me cookie.
2011-06-22 15:41:51,678 http-8080-1 anonymous 941x176x1 18g2gw4 127.0.0.1 /rest/usermanagement/1/group/user/direct login : 'Confluence' tried to login but they do not have USE permission or weren't found. Deleting remember me cookie.