I feel like I’ve seen this question before, but I couldn’t find it in a search and (obviously) don’t remember the answer…
I’m subscribed to thread that currently has 14 replies but 0 views. How is that possible? Does it mean that everyone who has viewed the thread has also replied (in which case “views” does not mean what I’ve always thought it did)?
One of the threads I posted in more than half an hour ago, which I’m now auto-subscribed to, shows as 0 views in my User CP. In the subforum index it shows 7 views (reflecting how many posts, not views since the thread isn’t an hour old yet). I would venture a guess that the subscribed thread list updates views with more of a delay, while the subforum index updates the thread views every hour as Frank suggests.