[Samba] locking strangeness

[Steve Thompson]

Mystified...

I have two ostensibly identical Dell PE2900 servers running Centos 5.5 
(kernel 2.6.18-194.11.1.el5) and samba 3.5.1. The smb.conf files are 
identical. On server #1, opening an Excel spreadsheet (any spreadsheet, 
any size, any client) takes about 1 second. On server #2, opening an Excel 
spreadsheet takes about 60-90 seconds, and I get a lot of these in the 
log:

   fcntl_lock: fcntl lock gave errno 11 (Resource temporarily unavailable)

If I insert "fake oplocks = yes" in smb.conf for server #2, spreadsheet 
opens now take 1 second, just like server #1. After having looked at 
everything I can think of, I cannot see the difference between the two 
boxes, but different they obviously are. Someone please give me a clue...

Steve