Why is enumerating installed MSI packages so slow?

Question

This is a follow up from this question.

I\'m using this slightly modified script to enumerate all installed MSI packages:

strComputer = \".\"

Set ob         


        

Answer 1

I suspected a network issue and Wireshark proved me right.

It seems that Windows Installer happily attempts to reopen all the original .msi files, including those who lived on network shares.