That was strange, this "Initializing Database Sychronization" shouldn't be related to the Stackideas toolbar installation.
Perhaps you can consider starting a new thread on our forums if you encounter the same issue so we can investigate this issue directly on your site.
Just for your information, I have locked and marked this thread as resolved to avoid confusion in the future. Please start a new thread if you have any other issues in the future so it will be easier for us to manage your inquiries.
Thanks for understanding.