(FWIW, I filed bug 629568 on another scrolling slowdown w/ layers enabled, using a bookmarklet similar to the one in this bug. That one appears to be a Linux-specific issue (or at least magnified-on-linux), hence filing a separate bug.)
(FWIW, I filed bug 629568 on another scrolling slowdown w/ layers enabled, using a bookmarklet similar to the one in this bug. That one appears to be a Linux-specific issue (or at least magnified- on-linux) , hence filing a separate bug.)