I'm not a developer, just an admin and can't seem to get salesforce support to answer a question about why apex jobs never leave the "holding" status in our org.  Since 11/6 - none of them have run.  Prior an hourly job was kicked off. It's the MailChimpToSalesforceBatch    that is an integration/sync job.  

The package from Mailchimp hasn't changed, only the behaviour. ( now we have to manually enter inbound leads acquired to our lists - where before everything was working fine.

Any suggestions? Salesforce standard support has rejected my requiests to look into why the job stays holding and is not released.