i have found a spammy bug when i was maceratoring and cooking my dusts in the induction furnace all are hooked up to a cable and the electrical engine is sucking the materials from the macerator to the induction furnace. here is a picture "i have tried moving cables around but does not work as you can see". and this spamming message only appears on servers as i can tell so far from the servers console.
EDIT:
the error: 2012-12-24 04:10:44 [WARNING] [IC2] API ERROR: ic2.advancedmachines.common.TileEntitySingularityCompressor@77ebc867 diden't implement demandsEnergy() properly, no energy from injectEnergy accepted although demandsEnergy() returned true.
http://imgur.com/hMBJ6 a link to the image also