Intermittent network connection problem

[Jim Byrnes]

I have only been a Ubuntu(9.10) user for about a week now so my
terminology may not be completely correct.

I need to be able to connect to Ubuntu from my other machine that runs
OS/2 and about half the time I can. Other times OS/2 responds that the
network path is incorrect despite the fact that it is correct.  The
times that I can connect if I go to the network places  with the network
-> file browser I see 2 entries. One is a windows network entry with a
file folder for an icon and the other I assume is an unix-nfs entry that
has an icon that looks like a server rack.

The times I cannot connect the unix-nfs entry is missing.  I have looked
for ways to enable it but have been unsuccessful.  So far the only
solution is to reboot until I get a connection.

I don't understand why sometimes I can connect and others I cannot. Any
help would be appreciated.

Regards,  Jim