Boot times are greatly effected by the # of programs and services that are loaded at boot time.
My old clunker which runs at 1500 MHZ takes quite a while to finish booting because I load a lot of programs
when my system first starts. The # of files that avast! scans at boot time is also affected by the # of programs that get loaded at boot time.
The more programs you (I) load, the longer it will take.
Without knowing exactly what's being loaded at boot time, it's really impossible to make any comparisons.
I'm sure that my puter takes longer than 5 minutes to boot but with my routine in the morning, It wouldn't matter if it took 10 min.
Till I've got the coffee made, I don't really want to do anything anyway.