Why does "(null)" want access to my Twitter accounts? Have anyone seen this message before, when accessing the official twitter app?

"(null)" would like access to twitter accounts


I have an iPod Touch with iOS 5, not jail-broken.

Is it a virus?
It is a bug in the Twitter app, not a virus. (null) is simply what the program gets when trying to insert a nonexistent name into would like access to Twitter accounts.

I would report this as a bug to Twitter.