You can set in your wallet! Maybe you changed it or he changed something!?

Note that getting a transaction relayed across the network does NOT guarantee that the transaction will be accepted by a miner; by default, miners fill their blocks with 50 kilobytes of high-priority transactions, and then with 700 kilobytes of the highest-fee-per-kilobyte transactions.
The minimum relay/mining fee-per-kilobyte may be changed with the minrelaytxfee option. Note that previous releases incorrectly used the mintxfee setting to determine which low-priority transactions should be considered for inclusion in blocks.
The wallet code still uses a default fee for low-priority transactions of 0.1mBTC per kilobyte. During periods of heavy transaction volume, even this fee may not be enough to get transactions confirmed quickly; the mintxfee option may be used to override the default.

These are the options in the wallet:
-paytxfee=        Gebühr pro kB, die gesendeten Transaktionen hinzugefügt wird
-mintxfee=        Niedrigere Gebühren als diese werden als gebührenfrei angesehen (bei der Transaktionserstellung) (Standard: 1.00)
-minrelaytxfee=   Niedrigere Gebühren als diese werden als gebührenfrei angesehen (bei der Vermittlung) (Standard: 1.00)
-blockprioritysize= Maximale Größe in Byte von Transaktionen hoher Priorität/mit niedrigen Gebühren festlegen (Standard: 50000)

Maybe he changed this setting in his wallet!