What is 2_0_1browserhelper2.dll doing on my computer?
This is a spyware module which makes part of a hijacker toolbar.
Non-system processes like 2_0_1browserhelper2.dll 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.