Suddenly this happens: the thumbnails of my home page (which is a list of blog posts) suddenly take forever to load. Literally forever (they never load). But even this is not totally accurate: sometimes they just load fine. It seems like 70% of the times they keep loading forever and 30% they load just fine. Which leaves me completely baffled.
Some additional info that might or might not be related:
1) I used regenerate thumbnails and nothing changed;
2) I'm using the free Cloudflare service;
3) the picture displays just fine once you click on a post (the full size img).
Any ideas what can I look at?