samba - Dec 2002 - mapping drive in XP hangs

Hello list,

I have been using samba (was last at 2.2.2) sucessfully for nearly two
years on my solaris systems as the file server to my pcs. Recently
(since last friday) my XP boxes cannot map a drive, and auto-mapped home
dirs cause a huge timeout of over 15 minutes!

Nothing has changed in my config file, nothing changed on the system.
Just to try something, today I upgraded to 2.2.7, but still the same
behavior.

I am completely out of ideas as to what to check. I have looked at the
log files, but found nothing of interest, presumably because It just
hangs, not fails.

Note that our Domain services are provided by separate NT Boxes, and so
the registry mods make no difference. 

Please, any ideas would be greatly appreciated.

-- 
Marc Wrubleski <mlwruble@math.ucalgary.ca>
University of Calgary, Math & Stats Department

smb.conf:

[global]
   workgroup = MATH_DOMAIN
   guest account    log file = /usr/local/samba2.2.7/logs/log.%m
   hosts allow = xxx.xxx.61.0/255.255.255.0
   hosts deny = 0.0.0.0/0.0.0.0
   hide dot files = yes


[homes]
   comment = Home Directories
   browseable = no
   read only = no
   create mode = 0640
   directory mode = 0750

[public_html]
   comment = web published directory
   path = %H/public_html
   browseable = yes
   read only = no
   create mode = 0644
   directory mode = 0751

>Recently (since last friday) my XP boxes cannot map a drive, and 
>auto-mapped home dirs cause a huge timeout of over 15 minutes!
Likely a network problem, if you can swear you didn't change anything.

I had a similar problem right about when I switched from 2.2.5
deliverable to self-built 2.2.7 so the suspicion was thickening that
I should revert to the insecure fore-runner. All the more since no
amount of tracing showed any apparent problems except the time scale. 

And then I found out that the network people flashed another firmware 
in a fast switch downstream from another one hooked to a slow gateway 
hub. When the newly flashed switch went offline the header switch 
just rerouted all macs from the failed port to the 10 Mbps link-up 
causing something like the symptoms you describe. Just resetting the 
switch took care of the problem.


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