strange situation

i have a situation where i am using ethereal and seeing traffic on one
of my servers from a remote server on another network. The people at
the remote server are saying that they are not sending us any traffic,
yet i am seeing traffic from that specific server on my ethereal
traces. I've turned on time/date view on all the packets and they all
showed present time. This continued with 3 different traces.
Wondering what could be happening. Thanks