Maybe it is related?
NTSB concerned about potential for cockpit fire in some Boeing jets
http://blog.seattlepi.nwsource.com/a...ves/121251.asp
"The Safety Board is very concerned that the ADs originally scheduled to be issued as early as September 2004 still have not been issued. The Board considers any kind of fire and/or smoke in the cockpit to be a serious issue that could affect other aircraft systems, lead to a loss of visibility, provide a distraction, or incapacitate the crew and possibly lead to an accident.
Therefore, the National Transportation Safety Board recommends that the Federal Aviation Administration:
Complete the process begun in 2004 to approve the service bulletin for the installation of the redesigned windshield heat terminal block on Boeing 767 airplanes. (A-07-49)
Issue airworthiness directives to replace the windshield heat terminal block on all Boeing 747, 757, 767, and 777 airplanes in accordance with the Boeing service bulletins. (A-07-50)"