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Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] Newly introduced DoS
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What about this one?

@@ -1276,13 +1278,13 @@ bool CBlock::AcceptBlock()
     // Get prev block index
     map<uint256, CBlockIndex*>::iterator mi = 
mapBlockIndex.find(hashPrevBlock);
     if (mi == mapBlockIndex.end())
-        return error("AcceptBlock() : prev block not found");
+        return DoS(10, error("AcceptBlock() : prev block not found"));


Is it certain that it cannot be triggered by a peer having some huge number 
more blocks than you?