Well, I stilldon't understand why you make so big deal out of this one... reread my reply. I stated that avast couldn't be the problem when he tried to instal those 2 programs from Safe Mode - that's true, because avast! was not loaded is Safe Mode...
other things could block at safe mode, sometimes the hardware drivers would be worse installed at that situation.
That's true, but hardware drivers don't affect installation of software program, so even if you don't have installed proper drivers for your video card, which is let's say ATI Radeon 9200 SE, and you have installed just ordinary VGA standard drivers... that doesn't affect installing graphically demanding software applications such as Corel Draw, Photoshop or Fireworks... Same thing with sound card drivers... you don't need your sound card drivers installed to be able to run installation of CooEdit, Fruity Loops, Stainberg Cubase or Rebirth or any other audio application. Drivers are just required if you wanna hear outgoing sounds from those applications...