Rebecca,
Are you able to reproduce the firefox crash with lastest versions and if so can you please try running firefox -safe-mode in a terminal and see if you can reproduce it.
Ivan,
What does system-settings crash have to do with firefox or Rebecca's complaint. Please file a separate bug and attach it there, your bug is on kde-system-settings not firefox at all.
Rebecca,
Are you able to reproduce the firefox crash with lastest versions and if so can you please try running firefox -safe-mode in a terminal and see if you can reproduce it.
Ivan,
What does system-settings crash have to do with firefox or Rebecca's complaint. Please file a separate bug and attach it there, your bug is on kde-system-settings not firefox at all.