LookupHandle: Handle out of range

Hi,

I have a few users who’s Notes client crashes several times a day with the red screen of death.

Error:

Sorry, an uncorrectable error has occured

LookupHandle: Handle out of range

I have the NSD log as well but its a bit big to paste. Any ideas as to why this could be happenning? Could someone look at the NSD log file if I email it? I have other users which do not have this problem.

Any help would be appreciated.

Thanks,

Fabio