flagged to be skipped ?

[AuntieParticle <AuntieParticle@xxxxxxxxxxx>]

This morning up2date shows a new kernel update. But at the top of page I 
see "Flagged to be Skipped". Then below, reason for being skipped "PKG 
name/pattern". I can of course select it and get it anyway, if I wish. 
But I am wondering why it is flagged in the first place. I don't recall 
seeing this on updates of other packages. Does this mean the updating 
may not be the best idea? or does it simply mean that I need to make a 
clear conscious decision to do so? Forgive me if this all seems very 
obvious to you :) but I am still learning about linux.

Thanks,
AP