Don't now anything about Macbooks, but perhaps:http://wiki.debian.org/MacBook/Wireless
Might help, as you have a new kernel, you may have to reinstall the drivers with module assistant, I did on my Dell until fairly recently.
@xircon: Thanks for the reply and insight into the update process . . . and thanks for the link to the wiki, I'll have to go through it several times to figure out which would be the easiest way to get wireless again. I have to say the wiki still seems a tad obtuse to the uninitiated . . . I literally searched Debian and the wiki with "wireless" and got zero results only last week or so, so just like our dear ex-prez who was "amazed" by the grocery store scanner technology . . . I'm amazed when people post links to the wiki with appropriate data . . . . : - 0 But, thanks; I went through this process when I first installed LMDE and I have a thread here on it, that might give me the process that I used previously.
But, another question, is Network Manager an app that should show up in the left side drop-down menu or only in the right side toolbar? Question being do I need to re-install Network Manager at this point? I think in some of my past distros of Debian NM was launch-able from Menu . . . and now it is gone--I just have "Network tools" and "Network" . . . although it looks like from right click I can get NM to open . . . . But, I'm getting too old to remember how things were, even a few days ago . . . the past is gone . . . . : - ) Interesting avatar by the way . . . what does it mean? Is that the result of a system short circuit or what happens after doing an update and wireless is gone?? Anyway, thanks for the directional assist, the answer likely is there upon trying a few things--much appreciated.