Stuck call history

[user1]

For the 3rd time i knoticed that the call history "last call" would get stuck on a particular contact. And i would just erase the history and it will work fine again. This last time, however, messed things up where someone called and i just missed it..of course the number didnt show as last call and it was an important phone call. does it get full or is mine just tweak'n.