Noticed that my brother's laptop froze increasingly for a few moments. Symantec's Online Check discovered different versions of the w32.Opaserv.Worm in the system. Therefore I'm busy to remove the vile things these last hours. Seems as if I am winning now. Now I'm wondering if the other pc was brought down by a similiar pest. My brother really needs an Anti-Virus software. If I had known this I wouldn't have had so much difficulties to find a x-mas present for him.