Thank you very much for your helpful suggestions.
1. I think we had it on GMT0BST and this one hour difference problem was apparent. Our supplier suggested the GMT+1 which was clearly no correct but a workaround to get over the proble - until it happened again. I think this has become embroileed in the change of hour in the UK later this month for assignments with cutoff dates beyond that. We will change back to GMT0BST and check again now that you have told us that this is THE correct setting for us.
2. I had downloaded the hotfixes after we installed v3. I have just looked and we are on 3.01 This still remains a mystery
3. This could have been a real headache but Alex below has answered this one which is in fact a bug. Publicity, what publicity?
4. I'll ask our technician to make the checks you suggest.
How easy is to upgrade in the middle of a semester, maintianing records etc?
Many thanks once again,