2015-03-15, 18:24
@fynxgloire: Kodi is using your Thumbnails folder indeed.
Explanation: All textures that Kodi loads, with the exception of textures that are provided directly by the skin, are cached to the userdata/Thumbnails folder. Kodi maintains a local texture cache for thumbs and fanart, to allow fast loading of these images so that skins can display your media in the best way possible and quickly.
Possible steps: clean (or delete) your thumbnails folder every now and then. Recommended tools: http://forum.kodi.tv/showthread.php?tid=158373
Hope that clarifies it for you.
Explanation: All textures that Kodi loads, with the exception of textures that are provided directly by the skin, are cached to the userdata/Thumbnails folder. Kodi maintains a local texture cache for thumbs and fanart, to allow fast loading of these images so that skins can display your media in the best way possible and quickly.
Possible steps: clean (or delete) your thumbnails folder every now and then. Recommended tools: http://forum.kodi.tv/showthread.php?tid=158373
Hope that clarifies it for you.