Immature coins can turn out to be orphaned. I think in transaction overview page orphaned transaction is show with a question mark. In listtransactions you can also see any orphaned transaction. Those are normal. Only if you are sure that transaction book is somehow corrupted that would be a problem.
I understand that, but even if that happened it still doesn't add up to the 102.?? xpm that I saw listed.
------------------------
Here's my listtransactions data - found an orphan but it still doesn't add up.

[
{
"account" : "",
"address" : "AUAqondFdttbYREX5jvAZiP9gXFheNsyLF",
"category" : "generate",
"amount" : 15.83000000,
"confirmations" : 39118,
"generated" : true,
"blockhash" : "64bdb01b02430937c20aed8eb9bd06032fa9c3fc04325f8585151751435151a5",
"blockindex" : 0,
"blocktime" : 1373638119,
"txid" : "2cc00dd19ba56a452338483e8de889ddb1091acc5e56f4e11ea0795a3f1c2032",
"time" : 1373638119,
"timereceived" : 1373638121
},
{
"account" : "",
"address" : "AVSUpxMCaYvv52mhs7UKg2SAJUMwAetzdz",
"category" : "generate",
"amount" : 15.78000000,
"confirmations" : 37587,
"generated" : true,
"blockhash" : "5b1af00a05b4c148def79fa241dccd8903ba7c36fae3e0f680739cc5ff4619e3",
"blockindex" : 0,
"blocktime" : 1373653194,
"txid" : "062cd2a6c8ebfed54bc1854daf563f80c1568ad130510a01b06551e5d4c6bb58",
"time" : 1373653194,
"timereceived" : 1373653195
},
{
"account" : "",
"address" : "ATG6Rmns9iX3BUj6rsS4FLTfNd1a1PR81B",
"category" : "generate",
"amount" : 15.79000000,
"confirmations" : 37493,
"generated" : true,
"blockhash" : "76f8eea157abd8fe8d9aa84eb0a966b70fe645badaef6c5cd81f6da5bd28d6c0",
"blockindex" : 0,
"blocktime" : 1373654134,
"txid" : "b4502ad817a0fd289c004cf86f43edba435669157180c7581ccd384896aab37d",
"time" : 1373654134,
"timereceived" : 1373654135
},
{
"account" : "",
"address" : "AFucLrUND9zxn1N6bVcjiR7646F27Z8ddK",
"category" : "generate",
"amount" : 12.98000000,
"confirmations" : 14602,
"generated" : true,
"blockhash" : "fc0c760389b32f6506882b9805269351408cc202b7be3a3917cfe9533bd3a401",
"blockindex" : 0,
"blocktime" : 1373861370,
"txid" : "02e7d8ce63605bc51c196e96599ee8e2b9aa8b4659d35f3128cdbe348902c5e4",
"time" : 1373861370,
"timereceived" : 1373861371
},
{
"account" : "",
"address" : "APaJds4h2X7S6m11PPd7YM4SMom9ndvctx",
"category" : "generate",
"amount" : 12.71000000,
"confirmations" : 11019,
"generated" : true,
"blockhash" : "545f6f04b2fea1f653e26ecabd20b925786f53a11046afd9bba4091f79f37968",
"blockindex" : 0,
"blocktime" : 1373919068,
"txid" : "50fad5e4537cf9a0fdb2d264f21c4ca856874fe0f12e579d66a3e0c73f29b492",
"time" : 1373919068,
"timereceived" : 1373919068
},
{
"account" : "",
"address" : "AQR2s39nsmPEimAwHCgpiCsQS52yffEbX1",
"category" : "orphan",
"amount" : 12.66000000,
"confirmations" : 0,
"generated" : true,
"txid" : "5a920d7971985e1e8a860750f303ca21e210664642980771610773248d71b4fe",
"time" : 1373937796,
"timereceived" : 1373937797
},
{
"account" : "",
"address" : "ANVRyNWpWivgkUiYP38UTDv7xQXFuS7CUc",
"category" : "generate",
"amount" : 12.51000000,
"confirmations" : 6043,
"generated" : true,
"blockhash" : "d3c619c558c86fa9ed39a1af1a7960491bf41ab031b6f92a97153cdca5630f03",
"blockindex" : 0,
"blocktime" : 1374005196,
"txid" : "eaaa0d5f9ca3ae3ab48930b7a84fb3e5faa219b5fc6afd18234380ab9be19c6b",
"time" : 1374005196,
"timereceived" : 1374005196
},
{
"account" : "",
"address" : "AJULHztrJcqA4bot4T6qYwCFaUneBzrk71",
"category" : "immature",
"amount" : 12.45000000,
"confirmations" : 2646,
"generated" : true,
"blockhash" : "a1a0abd152c0d55e608d093140991ad7b9137eac93a0c8706c4138bc11824079",
"blockindex" : 0,
"blocktime" : 1374079574,
"txid" : "9dec60f161965632e69ac12ee0cac211872231c579b51144b5a89f3bb3d198ba",
"time" : 1374079574,
"timereceived" : 1374079574
}
]
