adp.exe is a spyware installed with common application such as Net2Phone, Limewire, Cydoor, Grokster and KaZaa. This monitoring process running in the background and should be removed to protect your personal privacy.
Non-system processes like adp.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