Thanks for the reply Katie, but unfortunately RAM allocation can?t be the problem because it is happening in a variety of cases where the physical RAM varies from 500 MB to 1.5 GB and the program allotment varies from 100 to 400 MB. It could be an extension conflict, but we run fairly basic systems.
Updating the Carbonlib seems to have helped today, but that might have more to do with the phase of the moon. Since updating the Carbonlib there has only been one quit which is not great, but it is considerably better than the crippling ten time a day. I was under the impression that this was a somewhat common problem for other users, so I am surprised that you have not encountered it before.