I will chime in on this.

For sometime I was receiving random dial-outs to Roadrunner servers. Was driving me crazy since all I could determine was that the dial-outs were coming from svchost.exe on my WIN 7 installation. I guess I was brain impaired at the time I was reseaching since the RoadRunner IPs shown did trace back to Google domains.

Finally determined that I had a bunch of Google crud installed like GoogleUpdate, GoogleUpdate Helper, etc. Installation times of the crud traces back to around the time I initially installed Avast! free although I cannot say that Avast! installed the crud. Getting rid of the Google crud was an adventure involving multiple passes of RevoUninstaller Pro and CCleaner plus manually uninstalling hidden drivers.

I do know one thing for sure. I never overtly installed anything Google related on my PC.

BTW - be fully awake when installating any Adobe Reader updates since the update has the Google Toolbar crud checked by default. Adobe is definitely a adware/spyware purveyor.