The good news is that I got my laptop back. Not only had Apple replaced my battery, they had also installed a new logic board, so my computer was running like new again.  :-)  The bad news is, this only lasted a few days. It began with a 1px-wide red vertical line along the right side of my screen. Then the lines multiplied, in different colors. After some time, the entire screen started flickering, changing back and forth between solid colors and a series of vertical bands. So I'm bringing my MacBook Pro into the Apple Store again tomorrow, and will probably be without my computer again for another week. Despite my technical issues, J and I had a wonderful time in Montréal. Our hotel was...