is M110 a source of problems?

Using TZ-Huxley and slic3r ver. 0.9.7 and win7.
After some layers normal printing the printer stops when I use Pronterface.
When I use send-gcode it stops and moves to a high X and high Y position.
With send-gcode.exe I get after 4781 normal lines:

send: N4782 G1 X72.330 Y77.130 *55
recv: ok
send: N4783 G1 F3000.000*107
recv: start
send: N4804 M110*27
recv: DEBUG:LineNr set
recv: ok

Is it M110 or is the problem prior to that, noticing the jump in line numbers?

When I search the g-code, there is no M110 ???????

It is obviously not M110, that is the problem.
M110 is generated from send-gcode.exe at the beginning of the transmission.
I changed the model a little and still get the same problem after about 21 layers. Some times the printer just stops other times it travels to a high X and Y position and stops.
2 examples of transmitted code form send-gcode.exe is attached.
I can't see the reason.

Changing to slic3r ver. 0.72b solves the problem.

Now Slic3r ver. 0.9.7 is working as well.
It was the extruder speed, that was set way to high, I had confused mm/minute with mm/sec.