I have some question regarding fb app ticker, I already ask this question on facebook development forum but its been a few days now and to no avail. You see, I have develop my very first facebook app called MagMeUp but every time I use it, my app ticker on the top right corner of my screen is showing a different name. I tested it on my brothers fb account and its just the same. But whenever I change its name, eg. adding “z” at the end like “MagMeUpz” it shows as it is. But when only “MagMeUp” it shows a different name.

I would suggest using the Facebook Linter to refresh the cache on your application and see if it helps.
http://developers.facebook.com/tools/debug
Also make sure that you are using the correct appid and secret in your app.