Some 1.5 Update notes

-Sand physics don't work so well anymore
-World4 (Skylands) is closed until they update the skylands+ plugin
-New 1.5 commands are not implemented (/testfor, /scoreboard, etc.)
-Redstone timings changed :(      ...a lot
-Any Saberpeep-Brand redstone must be re calibrated for the new timings
-Paintings pop on placement (paintings cannot be placed)
-Nether portals have a tendency to teleport you into walls. (portals do not link)

(            = fixed in 1.5.1)