Missing a train in Germany

Today we went to a historical city in the far South-West of Germany, called Tübingen. We started our four hour train journey in the morning and landed at the apartments of Pakistanis there. They started their hospitality by a delicious meal and then we went to see the city. Walking through the streets of this extremely hilly city, admiring the looks of old houses etc; we reached the beautiful fort. After inspecting it inside out, we came down to the river Neckar. It is a smaller river that falls into the big Rhine river later on. There were many types of boats there ranging from pedal-boat to rowing-boat and even long boats with a long wooden stick with which one of the sailors pushes the floor of the river to move the boat forward. My friends being afraid of the other options, we took a big pedal-boat into the river and travelled in both directions, stopping occasionaly giving way to other longer boats, amidst great confusions.

Later we got on the train back home. We had to change trains 3 times on the way to get the cheapest journey possible. There are normaly 10-15 min for train change at a station. After our first train change, our second train was reaching the station where we had to do our second train change. Five minutes before that station, we got up and gathered our small luggage and came towards the door; when all of a sudden, the train stopped. It waited there for about 15 minutes with the driver announcing he didn't know why the signals ahead were not clear to go. We were praying that the next train we were supposed to catch also gets late. Finally our train reached the station. We got (jumped) off and ran to the respecitve platform; but the train was gone. We returned to the ticket machine and got a new time table. Now it would take us one hour extra to reach home. We reached home later than expected and slept long after eating the meal our friends had prepared for us back home. See the photos of the trip at:
http://pg.photos.yahoo.com/ph/yasirniazkhan/album?.dir=bf8e&.src=ph