I dont know where chrome hides it prefetch files or settings. Probably in user>apps (hidden), or where its fingers in the system are located (which is why i dont install it in the first place). And this makes uninstalling in 'full' almost a must, and isnt garanteed to wipe the complete history/prefetch/cache.
I know i sound like I am wearing a tin hat, but if a program puts stuff in places other than its installation folder (making it harder to fully remove manually) then I automatically dislike it. (this is how advanced trial-ware tracks how many days you got left, and re-installing wont reset the counter - complete removal does not include the files/folders it installs in a seperate/different location to the installation folder).
Anyhow, let us know how you get on with the re-install. would love to know how many or how few fingers chrome has.