I too have been seeing the "no tree or server found" error. I have
resolved many of them but have one stickler.
Facts- Novell client sp2, OS = XP tablet edition,
This computer functioned fine after upgrading to 4.91sp2. After a boot
problem it failed with "no tree or server found". Removed client,
reinstalled it continued to fail. SLP Da was delivered via dhcp and
"192.168.21.X DHCP NORSP ?

also shows SLP bytes outbound, but no inbound

The da address is pingable. Other 200 clients use only that DA, so it
is functioning. Moving the workstation to a known good port/cable makes
no difference.

Any Ideas?