Sharpen your pencils!
As you guide your cursor over the blue avatar a strange feeling of dread comes over you.
Is this supposed to be fixed yet? Really annoying, running into it again today, when trying to look at my own forum threads that I created.
This may not be the "best" answer but, if the threads your looking for are ones you started new, did you subscribe to them ? If so, you can always access them by going to - Subscriptions -> Manage Subscriptions.
At least that will get you there.