I have bought the Starter Kit and am using the components to complete all the sketches in the "Getting Started with Arduino 2nd edition" book.
I just got stuck for many hours with what seemed to be at first a software problem with the last sketch (networked lamp adjusting brightness of leds based on words in a web page read by Processing sketch).
Once I ruled out the software I checked the wiring, ruled out that too until I noticed that wherever I moved the blue LED it seemed to work according to the sketch.
I went back to a very simple dimming cycle sketch and actually noticed that the blue LEDs I got are always much brighter than all the other ones.
Is this always the case, is there a problem with my LEDs or could I still be doing something wrong?