Okay so I finally got the popup today (not really a pop-up, but w/e), and took a print-screen (attached).. it is located near the clock (win xp btw)..
clicking on it does not give me any option to update/ignore,etc.. it opens firefox and goes to this url:
http://www.msgpluslive.net/download/?PageAlert
so im not exactly sure how i'm supposed to 'ignore' this update..