Ok, we've found the cunningly hidden options for syncing contacts, calendar et al - it is in Menu/Ctrl. Panel/Settings/General/Email/Personal Infrom. Manag./Applications... There maybe a shorter route, but haven't discovered it yet.
And one by one the phones have started syncing. OTOH we have no idea why... Will happily reproduce the settings used for others having trouble.
Now the phones won't send email. When you try it just returns "Email not sent"
