Graham,

OK, I've updated the GPE apps and still have the alarm problem. Just now, at 12.19am three went off together. Two were from earlier today (for meetings) - don't remember what the third one was. There seems to be no correlation to set alarm times and activation. Sometimes they go off when programmed, sometimes not. But in either case they can also go off later (and usually after midnight!).

The GPE apps installed are
Calendar
Contacts
Filemanager
todo
Summary

I presume you were not asking for every installed app on the tablet.

I do like the new summary with todo's now showing.

If you need any more info just ask. Cheers!