Cinderwolf,
At the top right corner of each topic's gray box, there's a line that says "Watch this topic for replies." You should be able to go into all of your watched topics (where it will say "Stop watching this topic") and click it.
To see which topics you've marked for watching, you can click on "Watched topics" further up on every screen above the button that says Print Topic.
If this doesn't work, we'll need to get an expert in here.