2.6.38 kernel offered this morning, but not this afternoon?

[Gilbert Sullivan <whirlygig@comcast.net>]

I upgraded my own two Wheezy systems this morning and got the new 
kernel. It fixed the invisible pointer issue I was having with the 
system that had integrated Intel graphics.

I got around to trying to upgrade my wife's two Wheezy systems this 
afternoon, but the new kernel isn't being listed as available. It's odd, 
because the old one (2.6.32) is now listed by aptitude as obsolete.

Does anyone know what gives?

Thanks,
Gilbert