If you check for threads in the last few weeks in this forum you'll see several warnings against downloading these patches. Microsoft DO NOT send email patch messages. Would strongly recommend that you do not open these emails or attempt any of the downloads.
I have been getting the same emails as Kegsy. All are about 144k/148k and I get about 5 to 10 per day and it started about 2 weeks ago. Will they every stop and do they actually contain viruses. I would not be stupid enough to open them but they are really getting annoying.
I am using hotmail, and I wonder if blocking the sender would stop them coming.