Here's an oddity that may interest some of you.
(all by itself) will pop up the error console if it's embedded in a page, used as hyperlink or simply pasted to the address bar. It does so in the latest gecko for KM 1.5.4 at least.
I startpaged "error console pops up" and discovered it's a known issue:
I happened to visit the "answers" site http://zhidao.baidu.com