The ycomp5_3_11_0.dll file is a piece of Yahoo! Companion 5.3 for Internet Explorer from Yahoo! Inc. Yahoo! created the Yahoo! Companion toolbar to enhance the browsing experience of their users with an anti-spyware tool and personalization options.
This toolbar also tracks your internet usage, but does not link the data to your user name or computer. It also does not target advertising at you based on data collected, and so most industry experts do not consider it spyware. If you are getting an error with this dynamic link library file, you may need to clean your registry to fix it.
The registry is a vital database on your system that tracks all the files you have installed. Mistakes in the registry lead to dll file errors. ZookaWare PC Cleaner will tackle that for you. ZookaWare PC Cleaner hunts down and repairs every error in your registry. When you see a dll file error, try running ZookaWare PC Cleaner to fix it. Do you know if your registry needs to be cleaned up? Find out by running a free ZookaWare PC Cleaner scan right now.