Bloatware reinstalling itself?

I'm prepping 2 inspirons right now. I've noticed this on Dell machines before, but thought maybe I was just mistaken.  This time I am 100% sure.  Both of these laptops, I logged in, uninstalled crapware (Dropbox, Partner Promo, McAfee Personal Security in particular).  Later, after doing Windows updates and rebooting, these things were back.  On BOTH laptops.  I'm honestly pretty upset.  This is marketed as a BUSINESS LAPTOP.  As an IT Manager, things like this influence my decisions.

Has anyone else experienced this?