Norton flags asus file "bs_load.dll" as a trojan horse and removes it. Any attempt to reinstall ASUS update has the same file grabbed and installation continues but when running the update program is attempted, error mesage says "file bs_load.dll cannot be found" and then an error message comes up that you must have a Asus motherboard to use this program.
NIS 2009 did this about a month ago, and NIS 2010 (just installed) does this as well.