fx2load_wrapper checks whether the proper firmware is already loaded and only re-loads and re-initializes the firmware if neccessary. This mechanism worked under Ubuntu 12.04, but apparently broke under Ubuntu 14.04.
As consequence fx2load_wrapper potentially always re-loads the firmware. Even though not intended behaviour, it's save, and doesn't even cost much time.
Will be fixed in future release.
Fixed in rev 27 (Release w11a_V0.62)