I began to notice Win7 trying to phone home about 4 months ago or more. I don't use the built in MS firewall so I started getting alerts when these new services started phoning home. Despite uninstalling and hiding the updates, they unhide them or re-release them under a new update with a generic description like "resolves and issue in Windows."
I've opted out of the "Customer Experience Improvement Program," and it still shows disabled, yet after each Windows update, the services and scheduled tasks that collect and send data magically turn back on and attempt to phone home.
Check your task scheduler, look under Microsoft / Windows / Application experience. There are three tasks there, AitAgent, Microsoft Compatibility Appraiser and ProgramDataUpdate. They should be disabled if you opted out of the Customer Experience Improvement Program. Every month after Windows Update runs and they all three become enabled again and start setting off my firewall alert and I have to disable them.
"The only way anyone can live in peace is if they're prepared to forgive." - The Doctor