The New York Times offers this report. The key snippet on the scope of the problem: “There is no evidence that questionable contributions amount to anything more than a small portion of Mr. Obama’s fund-raising haul. The Times’s analysis, conducted over a few days and looking for obvious anomalies, like names or addresses with all consonants, identified about $40,000 in suspect contributions that had not been refunded by the campaign as of its last filing with the Federal Election Commission, in September.”