Minefield (Firefox 3) 的 SSL Certificate 處理

Minefield 是 Firefox 開發時最新版的代碼。最近發現連不到自己簽 SSL Certificate 的站台，會出現以下的錯誤訊息：(像是 opensvn.csie.org)

An error occurred during a connection to opensvn.csie.org:443 because it uses an invalid security certificate.
The certificate is not trusted or its issuer certificate is invalid.
(sec_error_unknown_issuer)

以前只會跳出警告畫面，現在必須手動把站台加入例外名單：Tools -> Options -> Advanced -> Encryption -> View Certificates -> Add Exception。我猜這個功能會因為民怨而在正式版出版前被拿掉...