Full uninstal of Readee

I tried to install Reader, then the installer said that I was having a newer version already and closed. I don't have Acrobat on my pc, but anyway, after that unsuccesfull installation I discovered that i lost 300 mb of my disc space. I ran CCleaner, checked for any folders of adobe acrobat on my disc, but still 300 mb are lost. Where are those remnants of installation of the Reader and how can I delete them?

Win 7 sp1