One possible hint - On your original page in HTML source I see:
Code:
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
Please note that vBET is case sensitive in case of encoding and it is clearly described in installation procedure:
You have it set UTF-8 instead of utf-8. This can be the reason. Pease change it (instructions in readme.html from vBET package) and tell did it help. If not please try with cache turned off for a moment or even better create new thread for testing with title which for sure wasn't translated yet (your cache content can be broken because of wrong settings). I would check it myself, but your Admin CP is not in English and I'm not able to work there.