Running 24/7 for 45 days or so w/o any problem....
The thing is really simple, what blizz does is called sniffing... they check each package and compare... after a small filter they check the char log by hand, so ur scrub anyway if hit that filter... will be matter of time till they hand check...alot of people here running more then one stance, at last is smart enough to poof their mac, use a private dns or a server connection(20-50links with dynamic ip's up).
There's no thing as "take large break" too look as human... if u don't take small breaks between each run (10-30mins) u will still hit their filter... Alot of people here on forum running since start 10-20bots nearly 24/7 w/o being banned... So its just a matter of knowledge.
hey from what i know... multiboxing it's legal so blizzard doesn't care if you have 100 accounts running from the same pc.. with the same mac address ...so i guess all the security measures are useless.. it is all about luck .. but i still think botting 24/7 is a little riskier ... anyway i'm pretty sure everyone that got banned made enough gold/$ to buy another key or even more...