Hundreds of statistical submissions after new update?

Hello, I just recently noticed after a recent update that norton is reporting hundreds of statistical submissions of dll. Exe. And registry entries of well known safe programs downloaded on my pc. Out of curiosty anybody notice this recently? Possible changes in the way the signatures are being fine tuned? I undertsand they are more informational, but still interested as to why there has been a surge of submissions from verisigned safe programs. Thanks.