Google's Local Business Center, the place businesses go to add or edit their local business listing at Google Maps, is having some major technical issues.
A single post by Google Maps Guide at Google Groups really sums it up quickly:
We understand some users are encountering system errors in the Local Business Center. We're working quickly to resolve these issues. Stay tuned for an update!
Mike Blumenthal's blog has been recently covering some of the major changes and glitches with the local business center.
In short, if you are eager to make changes to your business's listing - I would wait it out a week or so. Or at least until you see the Google Maps Guide update this Google Groups thread with good news.
Forum discussion at Google Groups.
