I had a similar experience, however slightly different.
I just resubscribed to AS&T as they notified me last month that I had run out, two days after I subscribed again (with the Hubble DVD offer) my REGULAR copy for February turned up
Then the NEXT day, my NEW subscription copy arrived for February

with the Hubble DVD in it, however, the Hubble DVD seems to be blank? the picture is on the front, but it wont read in ANY DVD player I have (PC or home DVD) must get that replaced.
Bugger about the two copies, but seeing as how I always read them for MONTHS at a time, I am not too worried....one for the upstairs loo, and one for downstairs loo.....

(oooh, that sounds like I am the LOO for months! - not true!)
Generally the magazine is always on time and ALWAYS a top read! I am like Ric though, doesnt take long to read it from cover to cover, however, a good idea is to skim through, take notice of a few things, then revisit in detail things like Les' Deep Sky delights or Sue French's celestial sampler bits and bobs, very entertaining no matter how many times you read them.
Most of mine are dog eared by 1 -2 weeks...
Cheers
Chris