Hm. 2 days ago we experienced Image server link error, where the images we posted up but was not able to show in Steemit main site.
A couple of hours back when I tried posting a reply, it got stuck, like the page just froze, and when I refreshed it, the POSTDATA was never fired and the things wrote in the box is still there. Whew!
After reading this post of yours I guess the best way to do is to create a copy of what we have posted and set it aside incase it disappears again. I usually write a draft but with images, I will upload it on another site unless those are screen captures that is worth losing.
This is getting really odd for Steemit platform.