Hi,
Thank you for reply.

>>Do you use TRANSACTIONs in this app?
Ya, we are using TRANSACTION in our app

>>What RAM and what OS is the "server" running?
DDRRAM 133, APACHER/KINGSTOM, WINXP Pro on server

>>I find it hard to believe that turning OFF disk cache would give you >>errors. You turned it off on all machines?... You turned it off for each >>HD on EACH system?...You turned it off while nothing was running on the PC >>except the OS and its services?
We ever try to turn off the HD Cache on server and one of the workstation. There is nothing run in workstation as services except Norton antivirus.
On server side, there are norton antivirus and a service called NETROCKEY (for software access protection) run.

>>Finally, is it possible to try running with only 5 or less workstations >>attached? I believe that 9 may be too close to the limit of peer-to-peer >>capabilities.
We have a client that using the same application, same hardware and environment with 4-5 workstation at the same time. It doesn't cause any corruption yet, however, we got a complaint about system will start slowing down after used for 7-8 hours even just insert one record to a cursor. Also, the grid on the workstation (POS) may cause error "expression dynamicforecolour/backcolor is invalid" after it run for 7-8 hours.

Any ideas?

Thank you