BNA has this report (subscription required), reporting on the FEC’s dismissal of enforcement cases involving the McCain, Clinton, and Giuliani campaigns. It also notes:

With less than a month left in 2008, the FEC has posted on its website actions on only 38 major enforcement cases completed this year, compared to an average of nearly 100 major cases resolved in previous years. The agency has assessed no major penalties this year after imposing millions of dollars in fines against so-called Section 527 groups and other political organizations in 2007.