a simple restart got it back, ok.
now, back to my other question, any idea how/if I can talk minefield into installing http://lazarus.interclue.com/downloads/lazarus-beta.xpi ?
if I click the link on http://lazarus.interclue.com/download.html , nothing happens. if I use file -> install extension (added by https://addons.mozilla.org/en-US/firefox/addon/421/ ), nothing happens.
I can't seem to install https://adblockplus.org/devbuilds/adblockplus/adblockplus-1.3a.20100625.xpi , either