On second sober thought I find that I was very lucky to end up with 2.5/5 points. I probably only deserved 0.5.
In game 1 the position where I thought I might win was as follows with white to play:
Later on in the game I completely lost concentration and played 50. Rxd3 missing the fact I would lose my bishop.
In game 2 against Jamil we had the following position:
Later on Jamil lost after making some small mistakes and then blundering with 39...Qc8??
In game 3 I was just outplayed and lost.
In game 4 I was lost most of the game. In the following position white could sac the Knight on f5 and mate will follow.
Game 5 was probably the most disappointing for me. My opponent played an incorrect tactic in the opening on move 18 and I was winning. Over the next 66 moves I must have blown my win with bad moves about 6 times but luckily my opponent played worse.