eth.pendingTransactions duplicates

[ethers]

Geth
Version: 1.1.3
Protocol Versions: [61 60]
Network Id: 1
Go Version: go1.5
OS: linux

duplicate tx and/or nonce of 109 seems wrong? there should only be 1 tx, or the nonces should be different?

> eth.pendingTransactions
[{
    data: "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",
    from: "0x26ac60acb581516b175010730a2bcee041bb0099",
    gas: "900000",
    gasPrice: "500000000000",
    hash: "0x0917e79e616eba94681b66cee9f45affd4b877e7ac6674c359ee5dfd37096a43",
    nonce: "109",
    to: "0x2fd4f3ae10608cd6192339e72d4f6a0c182dee22",
    value: "0"
}, {
    data: "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",
    from: "0x26ac60acb581516b175010730a2bcee041bb0099",
    gas: "900000",
    gasPrice: "500000000000",
    hash: "0xd7e0b10ad549611d046ee274f388075522cbfa6cd619e5972050dfd2fe769a36",
    nonce: "109",
    to: "0x2fd4f3ae10608cd6192339e72d4f6a0c182dee22",
    value: "0"
}]

[obscuren]

The duplication is intended behaviour. The issue, however, is that transactions with the same nonce are being generated. See #1662