For sure we're all crazy, but this is real!
![Cheesy :D](https://www.eevblog.com/forum/Smileys/default/cheesy.gif)
Yeah this has been happenning for weeks now, but you would notice inmediately after uploading, as you say, deleting and uploading again fixed it.
Aware of this issue, I always check the attachments after uploading.
That post was ok, but then a picture uploaded to a different thread got there.
So that's a more serious issue. You could be breaking you -perhabs- hard work by uploading pictures to new posts.
Two months later someones replies about a picture that went wrong, asking for reupload, but you don't have it anymore!
Your work went straight to waste!