Whats wrong with my Bitcoind

[Uniex]

I have running Bitcoin server in a way - "bitcoind -paytxfee=0.00121 -daemon", however after sending some transactions, I see that they were sent with
higher fee - why it's happened ?

For example this transaction - https://blockchain.info/tx/6243abc0d379293d66dfb6385e93322142356105c2c6ba235ca34f4c50fe55ed
176.904 sat/B

[torusJKL]

what version of bitcoind are you running?

[SFR10]

Nothing is wrong. That transaction uses a lot of inputs and as result it's size is larger than the usual tx sizes, so the needed transaction fee is also larger.
Network congestion also has a little bit of contribution nowadays.
See for needed fees: http://bitcoinfees.21.co/#fees

[mocacinno]

I found this issue reported on github:
https://github.com/bitcoin/bitcoin/issues/7633

Seems like it might answer part of your question, depending on your bitcoind version...