Pretty good ride home last night, but had to break out the granola bar I keep stashed in my vest. For some reason, got that sorta "wilting" feeling about 5 miles in. Munch on the granola bar over the course of a couple miles, couple swigs of H20 (honest!) and I was fine for the rest of the way. Rode without the pack again, and the time got better in spite of the fact that the wind shifted during the day making my expected tailwind a headwind part of the way.
Noisebeam - glad to hear you're okay. Tough luck about the 'puter... better that than you getting run over by a car!