Regarding antivirus - Norton is not the same thing as Symantec: the professional endpoint protection is now excellent (although it wasn't a few months ago). Norton on the other hand really slowed me down.
In my opinoin, we want a specific job done with a DAW and a general purpose do-everything OS isn't the right way to get it done. That's why hardware appeals to me, the firmware is written to just do one set of tasks. "it just works" (or doesn't) more than a Mac or PC can.
Timo, bomb-proof is a bit over the top. Code and idiot tolerant sounds more like it to me
B