Media Library thumbnail file

Hi guys,

I need to delete a lot of thumbnails from my server as i’m approaching my inode limit. however, i’d like to keep the one/s used as thumbnails for my media library. i tried deleting some files but i can’t seem to get it right.

in media i selected 100×100 to be the thumbnail size. i kept that file, plus i opened the thumbnail file in a new window – in my case, 100×53 -, and the thumbnail still disappears. any ideas?

The blog I need help with is tracker-magazine.com.