This is the second post I've seen lately about this. I believe this is only true if you've thumbed up a thread originated by someone you have used the ignore button on.
Would you mind helping to see if that is the case or if there is a bug somewhere? Try thumbing down the thread again and see if it is still visible when you refresh the list. Could you also post which browser you use? I'm interested in what the result is for you.
No, Butrflynet, I had not thumbed the thread up. I never thumb threads either up or down.
But, I'll experiment just for you...
If I thumb the thread down, I do not see the thread whether or not I put Setanta on ignore. So, thumbing a thread down means you don't see the thread. It doesn't even show up under "My Posts". But this has nothing to do with whether the thread starter is being ignored or not.
If I put Setanta on ignore, I still see the thread, and it appears under "My Posts", but only Setanta's opening post is visible, all of his other posts in this thread are collapsed.
So, it appears that putting someone on ignore collapses their posts from view, unless
they have started a thread, in which case you will see the thread and the opening post by that person.
I don't know whether this is a bug, or whether the ignore feature is simply intended to apply to a member's posts, except those posts which open a topic thread. One might want to ignore a particular poster but not necessarily ignore all topic threads started by that poster.
I am using Internet Explorer.
Hope that helps you.