RB#953: Read timed out after minutes of playing

I get kicked from my server after a while of being on it. All I was doing was setting up some pistons (never placed them, just redstone), then I get kicked. No error in the console or anything.

Plugins: BukkitCompat, kpcxBukkit, CommandBook, Minequery, CraftIRC, BlocksOnGlass, SignColours, Lockette, WorldGuard, UserLog, FalseBookIC, WorldEdit, FalseBookExtra, MultiVerse, PortalStick, xAuth, FalseBookBlock, Permissions, BukkitContrib, FalseBookCore, iChat, LogBlock