I installed CCleaner using the 'Slim' installer on Windows 7 x64.
I have also set CCleaner to 'Run CCleaner when the computer starts'
However, after uninstalling CCleaner, the registry entry for the
above Auto start still remains in the registry (see entry below).
HKCU,"Software\Microsoft\Windows\CurrentVersion\Run","ccleaner",0x0,"""C:\Program Files (x86)\CCleaner\ccleaner.exe"" /AUTO"
While this won't necessarily cause any major problems, it really
is not good programming etiquette to leave this behind.