Uhd + usrp2 warnings

Hi,

If i power on the USRP2 board, LED F light up first and LED E, C, A
flash and LED F and D remains on. Is that the correct boot up sequence
cos i saw in youtube video, LED B, D and F remains on.

If i run GRC i’m seeing following warnings,

Current recv frame size: 1472 bytes
Current send frame size: 1472 bytes
Making transport for DSP0…
Target recv sock buff size: 50000000 bytes
Actual recv sock buff size: 131071 bytes

Warning:
The recv buffer could not be resized sufficiently.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
Making transport for DSP1…
Target recv sock buff size: 50000000 bytes
Actual recv sock buff size: 131071 bytes

Warning:
The recv buffer could not be resized sufficiently.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
Making transport for ERR0…
mboard0 MIMO master

Warning:
The hardware does not support the requested RX sample rate:
Target sample rate: 0.190000 MSps
Actual sample rate: 0.195312 MSps

Is there something wrong with uhd+gnuradio installation?

ANT