The problem I've been having with HC is that most profiles do a town portal to save running to a waypoint. If something attacks the bot often ends up doing a 10 second time out and dying. I've lost 2 that way.
wynects weeping hollow works well, but has low IPH/XP per hour for me without the neph valor you get on longer runs.
http://www.thebuddyforum.com/demonb...eping-hollow-safe-efficient-farm-high-mp.html
But for now it's the only one I will let run unattended. Trying to learn how I can add a return to the cemetery to other profiles.
Edit: similar issue can happen in The Decaying Crypts.