Leaderboard Bug

My old scores seem to be reposting. On the killing spree list for the past 48 hours I am in first place with a score that I posted about a month ago.
I can see two possible reasons for this...
1. I upgraded to the 3.0 software this morning.
2. I had my iPhone (2nd Gen 8GB) replaced yesterday because of hardware problems.
-Tommy
I can see two possible reasons for this...
1. I upgraded to the 3.0 software this morning.
2. I had my iPhone (2nd Gen 8GB) replaced yesterday because of hardware problems.
-Tommy