Openview Alarm Browser acknowledge issue

[grabrail]

Hi

We use the Openview alarm browser to monitor multiple customers sites via SNMP traps.

We have a number of users that run the xnmevents.exe to view the alarm browser.

most of the time, when one user acknowledges and alarm the other users dont see it as acknowledged.

Has anybody seen this before, does anybody know the prerequisites to have this type of scenario.

I am new to Openview so I am trying to learn how to maintain and look after it properly.

Thanks

J