OK, in addition to my earlier query it's now becoming clearer that there is something seriously wrong. I've just had an example where a user had opened a form, searched for a record, found the record, then changed one field ( which has NO code attached to anything ), then whenever they click into a different field the data contained within it changes to that of a different record!, this then happens for all the fields on the form, this is on a form that's been working fine for months, the .mdb data store is fine, it Jetcomp's fine, anybody got any ideas at all?, anything even very small would be appreciated.