Slows too much the browsing Rated 2 out of 5 stars

It used to be a super extension which I would give a 5. Lately I start to browse the web very slowly, ie it took a long time before actually displaying the pages. I finally deactivated Ghostery and performance went back to normal. I understand you have to pay a small performance downgrade for what Ghostery does very nicely, but the price was too high for me.
-lbe

This review is for a previous version of the add-on (2.8.3).