Samba Performance is Very Slow
A site reported experiencing very baffling symptoms with MYOB Premier opening and
accessing its data files. Some operations on the file would take between 40 and
It turned out that the printer monitor program running on the Windows
clients was causing the problems. From the logs, we saw activity coming
through with pauses of about 1 second.
Stopping the monitor software resulted in the networks access at normal
(quick) speed. Restarting the program caused the speed to slow down
again. The printer was a Canon LBP-810 and the relevant task was
something like CAPON (not sure on spelling). The monitor software
displayed a "printing now" dialog on the client during printing.
We discovered this by starting with a clean install of Windows and
trying the application at every step of the installation of other software
process (we had to do this many times).
Moral of the story: Check everything (other software included)!