"Forget this site" seems to work well for me, but selecting thousands of history items manually and then pressing the delete key will lock firefox up for tens of minutes.
There is definitely something profoundly broken with how history is being handled. Probably more than one thing that's broken, from the sounds of it.
There is definitely something profoundly broken with how history is being handled. Probably more than one thing that's broken, from the sounds of it.