I too got this notice - twice. Microsoft don't tend to provide patches in this manner which caused me to look closer and I then read the words carefully. Interestingly enough the wording differed slightly on both and in each case the english was quite poor. That helped me to decide to query it with microsoft. The fact that the patch was only about 102kb was another clue - Microsoft's own are much more greedy of my phone time(a great source of annoyance!!)