Seems to have solved the problem of the browser crashing when you go back more than two pages. Don't care for the revised Privacy section on tools-options. Used to be you could clear everything with one button. Not any more.
Beanbag
I spoketh too soon. Ad-Block is kinda working: it blocks images, but now shows the outline of the image instead of just collapsing the page. It also doesn't show anything in the list of Blockable items anymore. Probably a 1.5 update is still needed.Just installed 1.5. I only use two extensions, Ad-Block and NoScript; NoScript still works, Ad-Block needed to be updated.