It's fairly common. There are only about 2 threads of engagement on the sparkplugs in 5.4L triton 2 valve heads. The new 3 valve heads have 5 threads of engagement and don't suffer the same problem.

I'm not sure whether Ford has issued a recall or TSB on this. My guess is that they have not and will not as it tends to happen only in higher mileage vehicles (after the plugs are changed and not torqued to spec). The Lightnings do tend to blow the plugs a bit more frequently. Whether you attribute that to boost or more frequent plug changes due to better owner maintenance is up to you.