A great forum and resource to get help with your Google ranking issues is the Google Groups: Google Webmaster Help Forum. But recently, the forum seemed pretty static and inactive.
On January 11th, a member posted a thread asking what is wrong with Google Groups:
1. Lots of trouble posting replies
2. When clicking on links to forums from http://groups.google.com/group/Google_Webmaster_Help get messages saying the thread can't be found. These are new threads so the chances of them being removed is slim
3. When looking at a users profile, recent posts are not being listed so it's difficult to remeber which posts you have replied to or expect a reply for.
Adam Lasnik replied confirming the issue and saying things are currently back to normal, on January 17th.
Forum discussion at Google Groups.