Is the blockchain forked?
Am I forked?

I am using
    "version" : "v1.9.9.0-61402",
    "protocolversion" : 61403,

I pulled yesterday from git and recompiled. Deleted blockchain and get fully synced.

The explorer shows different block hashes than my client
 http://explorer.syndicateltd.net/

Explorer:
1255608   bf36523870e8c0d87720c786067f822e2f64a1f44fb5a7717432cb4b6cbfc5c1

My client:
cli getblockbynumber 1255608
{
    "hash" : "323353e8fb0b4881ed59b536c1b43fb3cd697d4f4ad1ae6282669d54659beb40",
    "confirmations" : 58,