Question regarding the deployment of security updates for Microsoft Office

hi, need regarding distribution of security updates of microsoft office client pcs:

i have set organisation's wsus server automatically approve security updates microsoft office 2003.
the client pcs installed full package of microsoft office (word, excel, powerpoint , on) , have installed security updates office offered wsus.

recently, organisation decided remove poweroint pcs did reinstallation of microsoft office on these machines. 

the first problem these pcs still receiving security updates powerpoint wsus though powerpoint no longer around more.

the second problem after performed clean installation of os on 1 client pc , no office installed, still receiving security updates office wsus!

so have encountered same problem before or know how prevent wsus distributing "unwanted" office updates client pcs?
your appreciated, thank you.

i've seen happen when have compatibility packs/office readers installed?

Windows Server  >  WSUS