I dual boot, so I use portable apps to keep the same setting across OS.
On my laptop I have Chrome Portable installed on the shared drive.
Every couple of days I find a Google Chrome folder in my start menu. Inside that folder is a link to a different copy of Chrome located at
Also an uninstall shortcut.
I'll delete the folder and few days later it's back.
It only seems to happen in my primary OS which is Vista SP2