Siri: "I'm sorry Tom, I'm afraid I can't do that."

Another handy iOS 7 workaround, this time for iPhone: If you've had the experience of Siri refusing to dial a number he (or she) has always happily dialled in the past the reason is the number stored in your contacts is now too short for the nasal ninny. Edit the contact to add an extra zero at the end of the number to get around the bug.

iOS7 "Have you tried turning it off and back on again?"

It's fair to say Apple has a few problems with iOS7 on iPad, not least of which is the nursery room iconography being used. In fact, some of the buttons, particularly in Mail, are packed so closely together only a small child would find them comfortable.

A couple of bugs to watch out for after installing:

Your clock is probably now showing the time in Cupertino with the result that many Americans were late for work on day one. To fix this go to Settings > General > Date and Time where you'll probably see iOS7 trying in vain to automatically set your time zone. Toggle Set Automatically to off, pick your own time zone manually (it's important that you do this rather than simply toggling the automatic setting) then turn Set Automatically back on if you wish. All will now be working as it should.

Siri has a cold. Yes, Siri now sounds muffled, like he is talking through a wall. Officially, the higher quality voice should download automatically the first time the iPad is connected to power and wifi. In practice this doesn't happen. The fix involves another trip to Settings: Settings > General > Accessibility > VoiceOver > Languages & Dialects > Default Dialects. In my case I have British English selected. See the enhanced quality slider? If you try to move it, it will bounce back and a message saying preparing to download enhanced quality will appear. Nothing will download. To fix this, change to one of the other voices, such as Australian English, then back to your preferred choice after which the Enhanced Quality slider will work and Siri will be back on the job.