Heroes Plugin Ram Usage

Hey guys, I am setting up a server and was testing the Heroes plugin ( http://dev.bukkit.org/bukkit-plugins/heroes/ ) and was wondering if anyone has had any issues with it using tons of ram, or is it normal for it to used tons of ram? When I installed the plugin, without editing the config or a playerbase, the plugin used about 2gbs of ram.

Anyone seen this issue?

Thanks.