Evanston, IL has modified its gun ban to be in line with the Heller ruling:
The National Rifle Association sued Evanston and other Illinois communities with gun bans after the court ruled in June that a gun ban in Washington, D.C., is unconstitutional.
In response the city’s legal staff drafted a new ordinance that would let most residents keep guns in their homes, but ban possession of most guns by minors and of all guns by narcotics addicts, mental patients, the mentally retarded and persons under 21 years of age with criminal records.
That’s probably good enough to get the lawsuit dropped. Hat tip to Carl in Chicago.