Several months ago I had conduit take over my browsers and install toolbars, etc. I worked through removal instructions I found online and succeeded in removing the toolbar and search hijack, and thought it was gone forever but it keeps coming back. The only symptom now is that Explorer will start using around 25% of the CPU activity, which keeps my cooling fan running, and will not allow the computer to hibernate. It also may be interfering with Flash on Facebook and some other websites, but I'm not sure about that.
The only way I know that this is Conduit is that when I notice the activity starting up I run MalwareBytes and it finds a Conduit file, even though I have repeatedly cleaned using that program.
In your forums I found someone talking about ImgBurn installing Conduit, and I did have the program, so I have uninstalled it. Also I have Secunia PSI, so it was regularly updating ImgBurn without my being able to deselect any Conduit option, so that may have been the source of the problem, but I have uninstalled ImgBurn and cleaned with MalwareBytes and Explorer is still running the CPU at about 25%.