We have several chunkloaders that operator continuously and we seem to continually get this problem since updating to 1.3.4.17. http://pastebin.com/2M87qWwD

From ChickenBones: "Please report also to BC, see what they have to say about it"

ChickenChunks Issue: Chicken-Bones/ChickenChunks#20

Same as #2326 and that seem to be fixed in BuildCraft 6.3.

Why yes, yes it is.