Interesting that two pharmacies that DW hit said the same thing. Were they part of the same chain? I haven't heard of any particular reason why any meds should be in short supply at the moment.
In my profession, the term "hitting the pharmacy" will get you 20 years in a fed pen.
Mallinckrodt, the manufacturer of several strengths of generic Lortab (Vicodin), has been on backorder for about a week now.
My guess is the doc ordered you a Vicodin 5 and those will be shipping out to wholesalers beginning March 6th. If the pharmacy was smart and had a decent inventory of high-volume product they wouldn't even feel the shortage.
And, no, it's not a sign of the times. Backorders happen all the time. A sign of the times right now is doctors' closets being empty of samples. Those eeeeeevil pharmaceutical companies have taken a beating, and are pulling back on their marketing. Now I get people complaining they can't get free meds anymore. I thought they grew on trees!