Web Folders Auto-Install??

I built a new Win2K server and yesterday installed Svc Pack 3. This
morning, looking in the event log, SP3 installed successfully yesterday.

I was connected to the server using terminal services (admin), and it seems
like while I was connected a message popped up in the event log saying that
webfldrs.msi was successfully installed.

What is this? I understand that web folders are a part of the OS, but why
did this .msi install without my knowledge, and apparently while I was
connected via terminal services?

TIA for your help.