Issue with Spring and Task Queue on Google App Engine (GAE/J). Tasks are running without wait

I'm trying to migrate an app that I have done with servlets. I configur开发者_如何学JAVAed now Spring. The problem is that the enqueued tasks stopped working, they aren't waiting the amount of time setted up in the task properties with the countdownMillis method. Tasks are running without wait.

Any idea?

Thanks.

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I assume this is only happening in the dev appserver. I can't imagine Spring would have any effect on task scheduling in production.