yeah same here
apparently it was a false report for lwjgl.dll
i'm moving to another anti-virus...
do you know where that file is? i probably have it backed up somewhere, but avg deleted the one in my .minecraft folder.
this is the second time avg deleted something for no raisin.
...although the first time it was just saving me from itunes, its alright. :)
edit: great scott.
now avg is trying to delete my backup ;-;