SEP definition updates occuring too often. More than once a day.

Hi,

We have several SEP clients that appear to be getting updates more than once a day, even though LiveUpdate policy on the SEPM is scheduled to receive them at 3AM.

I realize the clients also get their updates directly from the SEPM as well as LU, but I can't find any frequency\schedule settings for the non-LU def updates.

Any help is much appreciated.

Steve.