Overwieght
 

Anyone thought that the wiring problem is that it was too heavy?

Airbus wiring problems just because they were trying toplease everybody
 

According to this article in the IEEE journal, the problems stem from the logistics of trying to do custom configurations for each customer, weight and balance problems from the difference between Cu and Al, and differences between versions of supposedly-similar design software in different divisions of Airbus Industrie.

http://www.spectrum.ieee.org/jan07/4816

If you want electrical engineering information, go to the source!