How to fix "Please excuse me, that was very impolite!" Answered
Instructables users whose native language is not English may sometimes get this error:
"Please excuse me, that was very impolite!
javax.servlet.jsp.JspException: ServletException in '/common/newlayout.jspx': Can't insert page '/pages/explore/type/instructable_body.jsp' : ISO-8859-10
blah blah blah to the end of the error page"
The solution (or rather a workaround) is to change the order of preffered languages so that english(en-US or en) would be the topmost preffered language.
If using Firefox, you should go to Preferences->Content and then reorder preferred languages.
On Chrome(or Chromium) you can access the list by clicking on the wrench icon, then Preferences->Under the hood->Change the font and language settings->Language.