Richiela, All,

The new client only accepts correct blocks (as it should!), there are currently some clients and people mining on the old 30 second prefork chain, the client, and you, should ignore that.

To ensure you are on the correct chain, as of a few minutes ago:

getblockhash 1055250
0105c0e6470d5ff08dc9ba8c67ab974b154782f711c5c9fc427d25fe49f89f9d

If your hash matches and you have that height, everything is fine, your client is working and on the right chain, safe to use.