We have an HP3000 969/220 on MPE/iX 5.0 PP6:

  This past weekend our telecom folks changed some 'switching' hardware on
our network in order to improve our throughput and since then remote users
located 3,000 miles away, have sporadically been experiencing very slow
responses, 5 to 40 seconds.
  Some times these delays also occur on local users, in fact it happened to
my connection yesterday.  Using reflections I had established 2 sessions
from my PC, both sessions were going through the same DTC and were the
*only* connections on that DTC at the time.  The overall CPU usage at the
time was between 5% and 12% and armed with a sniffer we performed a test of
printing to my screen the same ascii file, about 140 records.
 PRINT filename;PAGE=0
  On one of my sessions the entire file would print without any visible
delays while on the other it would be displayed into four chunks with about
3 seconds delay between each chunk.  Comparison of the network packets for
my two sessions showed that the *only* difference was the TCP/IP port ID
(1537 and 1528 respectively).  We could not duplicate the problem after
disconnecting both sessions and establishing new ones, but out remote users
still have the problem.

Any ideas?

TIA
Regards

Paul H. Christidis