According to JAXA, the average sea ice extent for Feb 2011 was in second place (according to my calculations):
avg for Feb 2006: 13.44 Mkm2
avg for Feb 2011: 13.52 Mkm2
Of course, sea ice extent isn't the best measure of Arctic melting -- that would be volume, which (as far as I know) is only calculated by PIOMASS (based, yes, partly on a model). That data isn't publicly available, so we don't know.
If extent was high I'm sure people like Romm would point out that it's really volume that matters. But since extent is low, they are OK with quoting it -- at least, according to someone.
Granted, it is strange that (as of March 1st) this year's sea ice extent is 2.6% below last year's value, what with the current phase of the North Atlantic Oscillation and all the northern hemisphere cold and all that.