No matter how advanced the military, things eventually boil down to the human element. Humans and organizations can NOT maintain a "heightened state of alert" forever without these kinds of mishaps. The IDF record is actually quite good considering they've been an a heightened state of alert continuously for 60 years. The real question: Is this what Israel wants? Continuous low level warfare indefinately? Is not a better alternative: diplomacy, dialogue, reconcilliation, comprimise? Not fake comprimise like this unilateral disengagement from Gaza, but REAL comprimise, painful for all sides, but with an end result that is joyous for both peoples.
Death toll from Iraq car bombs rises to 37 (Reuters)
from the article: Caught with its pants down