Checking TcpView, I see the freezing only occurs when there is a connection to adblock servers.
While I can apprecite the usefulness of Adblock, the freezing is very annoying, please fix this issue!
Adblock causes Firefox to momemtarily freeze.
Re: Adblock causes Firefox to momemtarily freeze.
Apparently, I could not reproduce this issue with the little information given. If it still happens for you, please file a more detailed report at https://issues.adblockplus.org