Firefox freeze on youtube site, when Unchecky is run(enabled)

Welcome. Problem is when Unchecky run and Firefox. Problem is on my W7x64 system.

Steps to reproduce:
1. Run Firefox and go to youtube.com site
2. Firefox load youtube mega slow and Firefox freeze, problem with playing movies etc.

Fix for this is:
1. Stop service in Unchecky program and click "X", exit from program, and Youtube site load properly and Firefox not freeze
2. Uninstall Unchecky...

Pls fix this bug