RS485/LogisticsPipes — pull request #232 by ArtForz (2012-11-15 23:45:56+00:00)
Title: Hopefully fix #229

Same issue gargaroth found is also happening in 1.4.2 w/ Optifine multithreaded chunkloading.
This should prevent at least this instance.
Haven't looked too closely what else optifine breaks by creating TEs (== calling our constructors and validate) in a 2nd thread...