Groovy just updated their beta release from 1.0beta-10 to 1.0-jsr-01. The syntax has changed a fair bit, because they're standardizing Groovy using a JSR -- its going to be the standard java scripting language, I guess.
What this means is that after I updated groovy this afternoon, groovyweather no longer worked. 0.2 includes a few syntax modifications to work with the JSR syntax.
Its still eating resources -- I haven't bothered to figure out why, I've assumed the problem is in groovy, and not in my script... hehe.