Flood detection happens usually when you try to make a post with the same text as another post within the last 30 seconds (though doesn't apply to empty posts).
>Perhaps cookies history for the quickbox, often time I accidentally switch the page and the replybox gets cleared. It would also be great to save&load the history of a quickbox
No promises on that.
>also auto post a number of pictures from a folder, often times I have to post the same images
You can select multiple images at once into the QR. (On most computers, hold ctrl while selecting files.)
I should disable post queuing in the QR on the board index, since you leave the page after the first post (and I don't intend to make it so you can queue up making multiple threads in one go).