I'm playing on a friend's server, and I built an HV Solar Array factory. Other people don't have any problems, but the factory uses up all my bandwidth (40kB/s I have a crappy connection). The moment the chunk it's in loads, the game stops loading chunks and it takes upwards of 10 seconds for my actions to register. If I fly far enough away, though, the game starts loading chunks again and everything goes back to normal.
I had a bit of lag while building it, but it was never unbearable and it's only recently become this bad. It stayed laggy even after the server owner reset the server.
I'm using RedPower machines for most things, with insulated red alloy wire whenever possible, and all my timers are set to at least 5 seconds. I am, however, using at least twenty Buildcraft Automated Crafting Tables, each with a redstone engine that's always running. They only go through one wooden pipe though, and they never overflow. Could the buildcraft crafting tables be the issue? Do you think that replacing the buildcraft crafting tables with the redpower one would fix it?