The Designer interface offers as error text "Internet Explorer not support!" which I've improved...though it's one of only two or three strings which haven't been abstracted out to the lang files; I wasn't sure if that was by design so I left it alone.
There are also two other strings which give error text with exclamation marks which really isn't needed and sounds like shouting, those have been fixed.
patchfile
Logged In: YES
user_id=210714
Originator: NO
Thanks Isaac. I abstracted these messages to lang/*.