posts remain in Unread Posts after read

[metulburr]

i wonder if i dont ever have this problem because i always use "mark all as read" link when i go through and read unread posts. I dont usually rely on the side buttons. But i never have had a problem. The only time i have ever noticed anything that seemed odd was when i mark my thread read, and then someone simultaneously edits a post, and it shows up as unread. But that is what should happen.

What are you guys doing to make them unread after reading them? Just reading them and still showing as unread, or clicking the side python button to mark them read?