Earlier this month (having not updated CCleaner Free for a long time), I was informed I needed to update. So I downloaded ccsetup555_rtb.exe and ran it. CCleaner now says I'm running CCleaner Free v5.55.7109 (64-bit). However, whenever I log into Windows, Firefox (my default browser) pops up with the CCleaner download page (). This is despite the fact I didn't last have that page open in Firefox (the browser remembers your last page). How can I stop this?