Subscribed Threads not showing up

I don't know if anyone else is having this problem, but when I go to the User CP screen and click on the "View All Subscribed Threads", it tells me There have been no new posts in the last 30 days to your subscribed threads which isn't true, since there have been new posts in subscribed threads. If I select "Show Threads from the beginning", it gives me the same thing, except 1000 days instead of 30.

It's not that big a deal, since when there are new posts, they show up in the User CP and I still get the notification emails, but it is annoying.

Thanks.