A few days ago Microsoft launched their freeware antivirus/antispyware software for genuine Windows users. Microsoft says that Morro is not competing, but is just giving a “install->update->scan->leave alone” software for users. I am using and extremely like its clean, simple and to-the-point interface.

You can get it here!
XP 32bit and Vista/7 32 and 64-bit are supported.
Comment on whether you like it not! :D