umm...in my months of using HB/GB, there have only been 2? times that the bots were down for more than 1 day, and that was because of "Warden 2" and a DDOS(also a recent one but that one was solved quick) which lasted a day then the ISP banned all the IPs which tried to get on at that time, which caused another day or two in delays. but other than those odd balls, the Buddy Dev.s have been really fast about updating the bot.
I believe the upcoming patch is 3.7, not the 4.0.1 some are suspecting(it's on pre download or somthing) so it's probably not going to be a major game changer.
just my 2cents
-HoH