Rated 2 out of 5 stars
This addon is helpful but it should never mess with nglayout.debug.disable_xul_cache if not changed explicitly via it's menu.
Currently it always sets the value to false even if I set i to true in about:config. The same happened if one of my addons needs to change the value temporarily at FF startup. It took me a long time to find who was the culprit. Please fix it, for now I am quite annoyed.