ie6setup.exe is a process which is registered as Microsoft Internet Explorer Installation Package.
"This program is a non-essential process, but should not be terminated unless suspected to be causing problems. "
Non-system processes like ie6setup.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you
check your registry to identify slowdown issues.