What a pitty that the developers of PDFCreator takes these actions.
To avoid this hassle, make sure to follow these two steps when installing PDFCreator v1.1.0:
What to do if the mistake is already done?
If you did not uncheck in Step 2 - no worries, many people do - then
- Close Firefox and close Internet Explorer.
- Go to Start -> Control Panel and open 'Programs and Features'.
- Uninstall 'pdfforge Toolbar' (Spigot, Inc.)