You can adjust all of the Norton Protection settings for your Trash by right clicking on the Recycle Bin icon on your desktop. Choose properties, then you will see the Norton Protection tab.
I set the files to auto purge after 2 days...and I also re-set the amount of space that Norton can use for each drive to 1%. With the large drives today, 1% of 80Gigs is 800MB...more than Norton could ever need (IMO). This is basically a disaster or OOPS! recovery tool for not only you, but the system as well.
I have found that if you do not purge the protected files for extended periods, that it can cause your system to act a little constipated
Empty them out regularly, just like deleting cookies and all that other temporary garbage.
later...