myjunkaccount

Hi all, If I have XP SP2 on computers I obviously only need to download all the post-SP2 updates rather than everything every released; how does this program handle this? i.e. does it only download the patches released since the last service pack (which means that when SP3 for XP is released the download list in WUD will be very small), or will I get every update since XP was released? Thanks in advance :-)