where are my alarms?

Good morning,

I have one question concerning OpManager. I'm testing it for buying but I have a strange problem.

I receive alarms and traps from several equipments. I have configured in "Database maintenance" and "Alarm database" for maintaining 10000 recent alarms in the database.

But now I still receive alarms and traps but they are displayed during 1 day or even few hours and then they disappear...

For example, I simulate several "Warm Start" traps, they were all stored yesterday but today they have disappeared like on this picture :

[URL=http://img92.imageshack.us/my.php?image=noalarmslw6.jpg]

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Is it that because I have too many alarms in the database and there are no space for maintaining new alarms anymore? But in this case, only old alarms should be deleted...

Have somebody an idea about this problem?

Nicola