Hello all,
  I'm pretty new to mining and i have a question. When i'm mining it seems like i always have 2-3 times more invald attempts, percentage-wise, than any pool i am in. it doesn't seem like a debilitating amount but i really have no idea what a large percentage would be. e.g. - in any pool i've been in the pool avg is 1-2% invalid and mine is around 2-4%. Is this a high percentage difference and can i do anything to lower it?

   thanks for any you can give i really appreciate it.
        Gypsy