Ghost Schedulable Classes Blocking Deployment

Has it something to do with this 'Known Issue'? http://success.salesforce.com/issues_view?id=a1p30000000STwPAAW

Update

While this is marked as fixed this issue still continues to come up from time to time. Fortunately Salesforce support can run a quick fix to address. Contact them and ask to run "fix for locked scheduled class" and include the deployment error message.

Just to add to this, as I recently had the same issue.

You can log a case with support and they will look to remove ghost jobs.. however. This article provides some explanation and code that can be run in developer console. I suggest trying this first (if you are happy to delete all jobs) as it is quicker than going through support. This article solved my problem where i had the error:

This schedulable class has jobs pending or in progress

• Make sure to read the article first.
• Running this code will delete ALL scheduled jobs in the organization
• You will need to reschedule all jobs manually after running this
• If you are unsure of the impact of this, please contact your internal development team
• If you wish to use ScheduleJob ID instead of cronTrigger ID to abort the job using System.AbortJob() use API version 32.0 or below

Code to execute:

List<CronTrigger> listCronTrigger = [select Id, CronExpression, EndTime, NextFireTime, OwnerId,
        PreviousFireTime, StartTime, State, TimesTriggered, TimeZoneSidKey from CronTrigger 
        where State = 'Waiting' or State='Running'];

System.debug('No of jobs: '+listCronTrigger.size());

If (listCronTrigger.size() > 0)
{
    for (Integer i = 0; i < listCronTrigger.size(); i++)
    { 
        System.abortJob(listCronTrigger[i].Id);
        System.debug('Job details ::'+String.valueOf(listCronTrigger[i]));
    }
}