An odd one here and I didn't realise until now I'd been op-upped.

Upgrade given: Y - J

Upgrade location: Check in.

Route: GLA-DXB

Flight number: EK26

Type of ticket: Saver

Date of travel: 3/05/2013

Tier status: Gold

Tier miles to date: 47750

Skywards miles balance: approx. 44,000 / 76,000

Number of pax on the same PNR: Single

And of course the first letter of your surname! A

The unusual bit:
I had been booked on the afternoon flight (EK28) which was cancelled and had used miles to upgrade. When we checked in again for the evening flight I never even thought about what had happened to my upgrade and queued at the J counter, received a J boarding card and on I went.
It's only now when I've checked my miles I see the upgrade miles have been re-instated to my account, presumably due to the cancellation of EK28. The upgrade on EK26 must therefore have been an op-up.