Hi I noticed that when I hot desk or move between machines, obviously posts remain 'blue' as unread that I may have read on a different computer etc.

Am I right in thinking that opening in 'thread' view marks all the posts read? It looks to be the case?

The problem is that when I log out, and log back in, even on the same machine, its forgetting which posts have been read. Is this something to do with my user environment or the forum? I am using Google Chrome.

Ahh ok. It seems to be the 'refresh new and read postings' button that causes it to mark some posts un-read again. Regardless of cookie etc. Is that the intended function of that button?