Thanks Neil. We'll give it a go...though I'm not sure why caching of any form should prevent the data appearing on the report - the data should be present in the cache and it shouldn't just disappear. I know ACT! databases have the same problem, and we often aopply the registry hacks to disable oplocks and caching to see what happens (usually not much).

Just had a user test as follows:

1. Preview Report (all OK)
2. Print from preview (missing data lines, bad totals)
3. Print without preview (all OK)

Then, went to another machine, and OK in all cases - weird, weird, weird...