Currently the Buildcraft thats in 1.0.1 has a lot of items that corrupt chunks and crash server. both have been reported and the reply was its the BC vesion, But in 1.0.2 it should be fixed. I go here daily to see whats new. Direwolf20 1.7.10 | Feed the Beast I think mods should do the same - Bc Filler 1.0.1: Buildcraft Filler issues | Feed the Beast - Bc quarries- 1.0.1: Buildcraft quarry max size Crash | Feed the Beast 1.0.1: Buildcraft quarry in the twilight forest server crash | Feed the Beast 1.0.1: BuildCraft Nether Quarry World Corruption | Feed the Beast Also Open Blocks sky blocks, i notice you can still craft in NEI 1.0.1: Inverted Sky Block 1418:1 | Feed the Beast
We will not disable them until we encourage these bugs and are not able to fix them. We have some resources that allow us to fix light to medium server side bugs.