Personas WARNING!!! Rated 1 out of 5 stars
I found this theme/addin very obtrusive, and buggy. I have a Ge-Force GTX 260 graphics card with the latest drivers. On several occasions I lost control of the FF window due to some graphics glitch that wouldn't let me click on any buttons, and I could only shut down FF through the Task Manager. I can't afford to be entering important data into a online form or doing email or even browsing and suddenly lose control of FF. I've used several other very fancy add-on themes with animation, window decorations and alternate fonts with no graphics issues. (I'm really enjoying this Nuri theme by the way ;)
I also think it's invasive. It integrates into FF and takes over control of the theme addin section so that whenever you go to the themes tab and click on Get Themes it sends you to the Personas web page even though Personas is completely disabled! WTF?
Additionally (yes, there's More), if you disable it, you can't uninstall it, which forces you to re-install it -- AGAIN -- to access the uninstall button. And you Will want to uninstall it because it puts a huge 8-line entry in a Tools > Personas submenu. Who knows what other bits and pieces of it are left over in FF just waiting to screw with something else.
Sheesh! And I thought I only had to worry about pop-ups!