I have a default start page I never selected, and I can't get it to stop taking over and posting ads. I have tried draging the link for Facebook or Yahoo onto the icon and clicking 'yes' to indicate that this is to be my start page. The next time I turn on my computer, conduit.com is back in control.
I also went into 'documents' and deleted all the programs I did not recognize, or that displayed no recognizable author.
Still it returns as the default start page.