Thanks Malcolm. Sorry, but it doesn't seem to have much credibility.
From cursory reading of the main article and linked source, one might conclude that the sun will dim by a huge amount. It won't. Magnetic activity and sunspot numbers will probably drop over the next few cycles, but the thermal output of the sun is only very slightly influenced by magnetic activity and will vary by maybe 0.1-0.2%, certainly nothing like the 60% that might be concluded from reading the articles.
It seems to me to be terribly poor reporting to make the leap from a fairly arcane maths paper to an assertion that a new iceage is coming....
edit: FWIW, it seems that this work was first published in 2012 (sans iceage beatup).
http://mnras.oxfordjournals.org/content/424/4/2943