以下是我的firefox about:config设置，记录以作备份
network.http.pipelining=true
network.http.pipelining.maxrequests=10
network.http.proxy.pipelining=true
network.dns.disableIPv6=false
content.interrupt.parsing=true
content.max.tokenizing.time=2250000
content.notify.interval=750000
content.notify.ontimer=true
content.notify.backoffcount=5
content.switch.threshold=750000
nglayout.initialpaint.delay=0
config.trim_on_minimize=true
browser.sessionhistory.max_total_viewers=8