Google analytics suddenly displaying (none) as most visited page

I've added in some modal pop-up tracking into my JSPs by adding scripts like the below.

_gaq.push(['_trackPageview', '/G1开发者_JS百科/MyPage']);

But since adding them, yes the MyPage gets picked up in analytics, but so does another page simply called (other). It rockets up to the most viewed page in the Content Detail widget for some days (with thousands of views), and zero views on other days. Any ideas on what this could be or what I've done wrong?