Installer size is keep increasing in control panel of client system with multipal domain user logging

Hi ALL,

I am adding an .msi  package through GPO to my client system.
It's getting install properly in client system and showing in control panel as well.
The problem i am facing is My installer size is 3 MB and in single client system if i log in with different users
say user1 and user2 then the installer size in control panel is keep increasing
for user1 it's 3MB
after log in with user2 it's showing 6MB
if i log in with third user it's listed in control panel with size 9 MB

I am not understanding what is happining.
Please some one help me on this.
Am i doing somthing wrong or missing somthing.

Thanks in advance
Ashish Agrawal