Debugging completely skips methods WHY?

I am debugging a project and 98% of the time things work well. The other 2% I get exceptions because the program decided to skip a method that it must go through.

When I hit the exception I drag the little yellow arrow back to the method and walk through the entire routine and everything works out fine.

What is going on here?

It seems that the program is working too fast for its own good.

Is your program multi-threaded?

no how do I check that?

Have you explicitly created any threads?

this also happens when your debug symbols are off (if you're attaching to a running application which has an older version of the code base).