Bukkit

v1.4.5a:

• Fix: German localization
• Feature: Saving and restoring modified item-names. Only in unsave storrage mode (config.yml: store.unsafe).
• Feature: When workbenches are blocked in config, the interaction with anvils and villagers is also blocked in creative
• Feature: Interacting with blocks like chest & workbenches is no longer permitted cross gamemode-zones.

developed for:

• Java 6 (JRE 1.5 may not supported in that build)
• CraftBukkit 1.4.5-R0.2
• WorldEdit 5.4.5
• WorldGuard 5.6.3

Even if the plugin is marked as release now (to prevent people from still downloading the very outdated versions), it hasn't got more testing then the current beta releases (meaning none).

This plugin isn't any longer actively developed

See Project Overview for more info.

• blocking all signs and chests isn't a good solution, but the minecraft-server lags the possibilities to intercept inventory-modifying for now
• breaking needed blocks lets drop attached ladders/doors/etc.