I recently have acquired a Leica D_lux 6 from a local retailer and according with Leica I would have right to have a licence for Lightroom. It was all fine but recently Adobe sent me a warnining telling that my licence have expired. I thought my licence was last longing for lifetime within Lightroom ver.4 .
My sister-in-law called me one day all upset because she got the same message about her Photoshop. I told her to just ignore it. And I haven't heard anything more about the issue. I have no idea what sparked a message like that to be generated. If Lightroom is still working fine I would simply disregard the e-mail.