My Zumo 550 has, since new, occasionally on start-up taken a very long time (3-5 minutes) to figure out how to connect with the heavens. It simply sits showing the map of where it last shut down with the words "Acquiring Satellites" across the screen's top and a question mark flashing in the center where the motorcycle icon normally resides.. Eventually, it goes, "Ah Ahah!" and goes on about its business, the motorcycle icon appears (actually, I use the plain triangle because it's impossible to tell at a glance which is the front and which is the ass-end of the corny motorcycle icon), and the GPS starts working like an, well, GPS. Sometimes it is necessary to take a pop quiz, and various questions appear (fortunately, the answers are usually simple "yes/No" but you gotta answer correctly) asking about location and date. Normally, once these questions have been satisfied, the GPS goes into normal function rather quickly. Last night headed from the country into metro Atlanta, the unit was working fine. I stopped and shut down right in the middle of the city, and then an hour later powered the GPS back on. It took what seemed forever to finally acquire satellites, but finally in about 10 minutes, and three questions, figured things out and began properly functioning. I reached the evening's destination and made the mistake of powering off (running from a cigarette lighter plug in the car) and did not ask the unit to continue on battery while I watched a movie. Two hours later, movie ended, I started up the car and the GPS informed me it was "acquiring satellites." This time, it took the unit a good 30 minutes to connect with the satellites and it ran fine the last hour of my trip home. There was some cloud cover but nothing unusual. The failure was not just when I was between tall skyscrapers and high-rise buildings but also in single-story residential areas. Anyone else had this problem? Can anything be done thru Garmin's web site as in maybe (Download a "fix" via a USB cable hook up between unit and computer?