<This title contains mature language. For your protection, it has been withheld>

"This address uses a network port which is normally used for purposes other than web browsing. Firefox has cancelled the request for your protection"

 Dear Mozilla,

 You guys are fucking idiots.

Love, 

 Update: okay, so I checked, and that's a legitimate security issue, known as cross-protocol attacks. Or rather it would be, if it wasn't for the fact that a user-entered URL cannot usefully be a source of such attack. And there's a bug dating back to 2001 stating "Add user UI for that". Still lame and just as enraging when I have to use another browser for one stupid address.