sis900 network act strange

Hi all,

I have rcently installed the QNX Momentics PE Evaluation (QNX Neutrino RTOS
hosted) on a PC whith a SIS900 network interface. After setting up the IP
adress stuff, I did reboot the system. I start the terminal, an execute a
ping. I receve responces, leave it running, and start a web brouwser. And
suddenly I don’t get any responces for the ping any more. I get the simalar
results when i ping the pc from an other PC.

someone know to fix this?