brake Rated 1 out of 5 stars
slows down scrolling of wikipedia sites with firefox 3.6.xx and userstyle dark shiny blue transparency ( http://userstyles.org/styles/23304 ) installedThis review is for a previous version of the add-on (1.0.11). This user has a previous review of this add-on.
Styles slowing down pages
Yes, some styles (especially those with background images) will slow down web pages. Unfortunately there's nothing I can do as this is an issue with Firefox. I recommend you use a different style if this is an issue for you.