Java 7 Update 11 has been released. This should fix the problem.
Only a partial fix, it seems:
If anyone wants to roll back to Java 6, they can download it here:
They are only scheduled to release security updates for Java 6 through the end of February 2013. But the last version might be safe for a little while longer than that, since the platform is so mature, with all the bugs already worked out of it, and since the hackers will mostly be focused on compromising Java 7.
If it seems wise to switch back to Java 7 in a month or two in order to keep getting security patches, that will at least give them a little while longer to work out their problems with Java 7.