WHAT?! Wow... you're right. Dang it.
Actually, you're right on another account, I am a perfectionist, at least when it comes to this type of thing. Using other applications, when I see something as simple (and admittedly trivial) as spelling mistakes, I think, wow, if that got by, what other kind of stuff (ie, bugs) got by? So I try to make sure little things like spelling are taken care of.
On that same note, I'm nearly through externalizing all of the text of the software. Got about 15000 lines of code left to complete (out of about 115,000). There are over 3000 individual "messages" in this program. There will probably be a few spelling mistakes in there...