Avast is also finding the DPservice toolbar on my computer too. Just like jwpetr when every I click to remove it Avast says it's gone but when I refresh it's back. Other antivirus software like malwarebytes don't find it.
I tried restoring my computer to factory settings, but when I download and run avast again, DPService is back.
Does anyone know what the dpservice toolbar is and what it does?
What else could we try?