Woke up at 9am for nothing!

I'm in the mood for blogging again.. lets hope this is going to last for a while..
I had a 9am class this morning.. my only class for the day. I woke up nice & early this morning, caught an early train, and actually arrived early for class.. something which hasn't happened for the past 8 months..
Anyway... I got into the lecture theater.. sat down.. and waited til the lecturer arrived..
She came.. and turned on the overheads... but nothing appeared on the screen yet.. Just when she was about to begin.. a security guard came in, and told her that we must evacuate the building because there was a gas leak (what's with the gas leaks lately!? thats 2 days in a row... one at the station.. one at uni)
Anyway... so we went out.. and I stood outside the building for nearly half an hour before they could let us back into the theater.
So.. 1/2 hour later.. we got back in.. I sat down.. etc etc.. and the lecturer turned on the overheads again.. this time something was actually displayed on the screen.
It says "Mechanical Engineering"
Here's a summary of what went on in my mind at that time:
"WTF!!!??? Mechanical Engineering !!??? Shit! I'm in the wrong lecture theater! Where the hell am I?"
So I went out the theater.. and asked the security guard what building I was in... and how to get to the right building
"You go out of this building, turn left, go straight, past the construction sight, bla bla bla, turn right, bla bla bla, past bla bla bla, turn left" and I think he ended it with saying 'turn right'
Me: "Thanks!" (great.. you lost me at 'past the construction sight')
So anyway... long story short.. because of the gas leak & having to wait outside the wrong lecture theater for more than 1/2 hour.. I was late for my lecture.. and decided not to go since there was only 15 minutes left.
Turns out.. I DID go to the correct building... but there are heaps of stupid signs saying "This way to ... theater"
I forgot the name of my theater... (I've never had any lectures in this theater).. so I thought the one on the signs was the one that I'm supposed to go to
Those signs were pointing towards staircase.. goes underground, etc
So they had the signs on Building A .. for a theater that's located in Building B.. which was right beside it
................................. *grump*