For account "" or "*" listtransactions reports transactions for "from" arguments way past the last actual transactions available.

Test of high "from" numbers:

bitcoind listtransactions "" 1 9999999
[
{
"account" : "",
"category" : "generate",
"amount" : 50.00000000,
"confirmations" : 897,
"txid" : "486dfdb3b9f61b4fa5b8b98c388e5b4b71f05a85371dd653aafe23d93aa56f08",
"time" : 1307918798
}
]

This is not actually transaction 9999999, but rather transaction 9:

bitcoind listtransactions "" 1 9
[
{
"account" : "",
"category" : "generate",
"amount" : 50.00000000,
"confirmations" : 897,
"txid" : "486dfdb3b9f61b4fa5b8b98c388e5b4b71f05a85371dd653aafe23d93aa56f08",
"time" : 1307918798
}
]

I realize the transactions are not actually numbered, but this behavior is unexpected. It does not seem to happen with other accounts than "" and "*".