2014-Jun-28 19:17:01.866210 [P2P1][76.16.120.82:18080 OUT]Sync data returned unknown top block: 105314 -> 105583 [269 blocks (0 days) behind]
SYNCHRONIZATION started
2014-Jun-28 19:17:02.200195 [P2P9]tx with id: <7498d444287287aac613fdc3fc46443dcca9834090659fd72d44397522059aaa> in block id:
2014-Jun-28 19:17:02.216796 [P2P9]Block with id:
2014-Jun-28 19:17:02.232421 [P2P9][79.169.141.249:18080 OUT]Block verification failed, dropping connection
You havent run out of space on your local drive have you, the blockchain needs about 1.5GB now, and the logs can get big if you are writing everything to a log file.
Also, FYI, the [P2Px] indicates each peer to peer connection, it will make up to ten of them usually but the peers are always reliable - you can get ones sending incorrect blocks or just disconnecting which will generate various messages from bitmonerod. As long as you have at least a couple of working P2P connections which are up to date then they will win out over the random incorrect ones.