Greasemonkey scripts often cause bad behaviour, though it of course depends on the particular scripts enabled. Firebug can also slow things down a lot, even if

Greasemonkey scripts often cause bad behaviour, though it of course depends on the particular scripts enabled. Firebug can also slow things down a lot, even if it's not enabled. (Apparently Firebug 2.0 is better in this regard.) Selectively disabling extensions isn't the most fun game in the world, but it's often effective in working out if one is causing problems. And private email for the about:memory data is fine. For my email address, take my HN username and append @mozilla.com.