Well, I'm just saying that any "fix" will not be an overnight fix.
Search engines also dont' update their databases instantly, it takes time for information to be updated.
Also, if you've been using a temporary redirect for your forums for a while, you should move to a permanent one.
Also leaving your old forum up as a placeholder don't help your content get crawled faster, in fact it can penalize you for having duplicate content (not to mention theres already duplicate links to the same stuff in 7.x).
Didn't mean to sound mean, but was trying to let you know that things take time to get re-crawled.