As reported here, RedNotebook leaves files in LOCALAPPDATA:
---------------------------------- Files added:19 ---------------------------------- C:\Dokumente und Einstellungen\PortableApps\Lokale Einstellungen\Anwendungsdaten\webkit\icondatabase\WebpageIcons.db C:\PortableApps\RedNotebookPortable\Data\.recently-used.xbel C:\PortableApps\RedNotebookPortable\Data\.rednotebook\data\2011-10.txt C:\PortableApps\RedNotebookPortable\Data\.rednotebook\data\2012-01.txt C:\PortableApps\RedNotebookPortable\Data\settings\RedNotebookPortableSettings.ini C:\PortableApps\RedNotebookPortable\Data\usersettings\configuration.cfg C:\PortableApps\RedNotebookPortable\Data\usersettings\rednotebook.log C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\1.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\2.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\3.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\4.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\5.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\6.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\7.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\Call.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\Help.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\Journey.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\Meeting.txt C:\PortableApps\RedNotebookPortable\Data\usersettings\templates\Personal.txt ---------------------------------- Folders added:9 ---------------------------------- C:\Dokumente und Einstellungen\PortableApps\Lokale Einstellungen\Anwendungsdaten\webkit C:\Dokumente und Einstellungen\PortableApps\Lokale Einstellungen\Anwendungsdaten\webkit\icondatabase C:\PortableApps\RedNotebookPortable\Data\.rednotebook C:\PortableApps\RedNotebookPortable\Data\.rednotebook\data C:\PortableApps\RedNotebookPortable\Data\settings C:\PortableApps\RedNotebookPortable\Data\usersettings C:\PortableApps\RedNotebookPortable\Data\usersettings\data C:\PortableApps\RedNotebookPortable\Data\usersettings\templates C:\PortableApps\RedNotebookPortable\Data\usersettings\tmp
THe app was launched from the platform (C:/PortableApps/PortableApps) and PortableApps is the username of my test user.