Dear PaulS,
Sorry, perhaps my description was not adequate, The actual thing that i am working on would not do this, I only wrote this sketch to ilustrate the problem i am facing. I purposely wanted the sketch to loop over and over again. Logically, based on what I have written, the main loop would never run right? But what actually happens is that it works once twice or three times (it is unpredictable how many times it loops, sometimes it goes straight to the main loop on the first button press). My question is why is that happening when the code just loops around start?. I have a feeling it may be hardware related, but changing the delay (to allow adequate time to take the finger off the switch) does not seem to help. But with this test code, even if there is a short in the switch, it should not go to the loop function, but it does...