uBlock Origin seems to be very good -- Firefox is now usable again on my Celeron laptop. It was really struggling with Adblock Plus. Thanks.
'Sir, please,' she said ... 'Will you not share your wisdom with us?'
'I have no wisdom,' he told her.
'Your experiences, then?'
'They have been trivial, uninteresting, and full of error.'
Iain M. Banks -- Feersum Endjinn