ok thanks for the info. Still not convinced this is a malware issue but we will move on to combofix and see if it digs up anything and then go from there and start removing installed google products.
There is a short guide and download link here:
http://www.bleepingcomputer.com/comb...o-use-combofix
read through the guide and apply the directions on your own machine. Post the combofix log.
A question; does the message just popup randomly while your using Chrome to browse. Do you notice a pattern or anything?