Stickied Conversations

I recently made a bunch of conversations sticky threads in my inbox for ease of reference.


Now I can't unmark them as a sticky.

I go into 'edit conversation' and uncheck the 'sticky conversation' button and submit. However, the thread remains a sticky.

Any help would be appreciated.

In the conversation list, select the sticky threads, then in the little pop up box there is a drop down - select unstick conversations.