Inferno limit breaker

Well the Number which is shown must be wrong. I kill now a Guard in 30 sec b4 it was way over 1 min, so inferno must deal way more dmg than shown.

Healing HP is considered negative damage. The display for DoT damage is a short int, which means it can only carry values of -32768 to 32767. If you roll over 32767 damage, you'll start going back into the negatives - that's why you see blue numbers. The actual damage is still what it is, but you see a random blue or orange number between 0 and 32768.