ycomp5_6_0_0.dll is a ycomp5_6_0_0
belonging to Yahoo! Toolbar 5.6 for Internet Explorer
from Yahoo! Inc.
Non-system processes like ycomp5_6_0_0.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.