A simple solution is to turn it (read: the item pumps, not the condenser itself) off before leaving it unattended for a long period, especially if its near a WorldAnchor!
A finite but effective solution for people with a fair bit of EMC to play with is to pop an Alchemical Chest right next to where the stuff will fall out and pop a Black Hole Band and possibly even a Jewel of Infinite Density inside the chest, turning it into a drop hoover
I've also noticed another phenomenon: fire spreading was originally turned off, which was a lucky thing back when I was trying to work out how to work my Arcana (back when it was in-game) Now is no longer the case. And in Tekkit fire spreads further than the vanilla 3x3x6! I've flown around and seen lots of fire damage and even some gutted buildings, and most of them had a netherrack fireplace inside...
As for the fire damage, that might have been left on after we did the server migration, We'll have to look it up