Same things happens with AVAST antivirus, first time I saw this in beta 4, it was in RC 1 , and still remains in final. Apparently there is problem with short names conversion in path name of some applications at boot time. As I remember there was post from developers at beta forum that they know about problem and they are wonking on it, but final version is here and bug is still present. I don't kow if it could affect security, but is sure annoying.