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Firefox connections are slow recently, but nothing else happened.
Sometimes there is "Connecting to www.superfish.com" on status bar, but I do not access this website.
Checking connection with "Tamper Data", and found the bottleneck is "http://www.superfish.com/ws/sf_main.jsp?dlsource=calculator".
This connection waits 4 seconds at most, and only when this connection
finished the original connection begins.
Look into the parameters in the url, I thought it might be caused by the addon calculator.
The addon websits said "Remove Smartlinks system and add Similar Products service (can be disabled from the extension preferences) "
The radio set to turn on/off this "service" in the bottom of preferences page.

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Firefox偷偷連結www.superfish.com造成瀏覽速度緩慢


最近Firefox開網頁變得很慢,但除此之外並無異狀
狀態列偶爾會看到Connecting to www.superfish.com這個陌生的網域
於是開Tamper Data檢視連線狀況

發現瓶頸果然是http://www.superfish.com/ws/sf_main.jsp?dlsource=calculator
此連線最長4秒,完成後才會連線目標網站
再仔細看網址參數,直覺應該是addon calculator搞的鬼
網頁寫"Remove Smartlinks system and add Similar Products service (can be
disabled from the extension preferences) "
這個開關在calculator的preferences頁面底端。

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