I recently ran into problems while cleaning up my website. Using an FTP client I was unable to delete certain files and folders, due to permissions, that had been created by a plug-in (in this case, files within the "cache" folder used by wp-cache and WP Super Cache).
My hosting company resolved this for me and left me the following message:
"... these [issues] are caused for example by a CMS system or
a Blog or something similar. If files or images are uploaded via these systems they are given a username on the server relating to the webserver, which is different from your FTP username and thus the server will not let you delete them."
Is there anything I can do or any WordPress settings I can tweak to ensure this does not happen again? Thanks.