the only way that I have been able to get around that is that you have to remember the time that you last were on or the time of the latest new post that you saw, and then click on quick links near the top/left and hit latest posts, it won't keep those ones that are unread actually looking like they are unread, but you knowing the time of the last new post can just go back to the time in the latest posts where you left off.
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