I've found that any overhead lifting aggravates my neck. Hamstring injuries are a drag because they seem to hang on. In my case, my hamstring problems were a result of arthritis in my lower back referring the pain down my leg. Sadly, neck and lower back problems seem to go together, according to my spine doctor.

When it acts up, I lower the weights & make sure that I'm stretching the hammies. Single leg deadlifts - also called single leg Romanian DL's - are great & work lower back + hamstrings.