A batch delete for a custom list is failing. I click batch delete. The interface tells me that the job is in process. I check back later, and the job never occurs.
It looks like in this case there are some issue with some bad data associated with the profiles trying to be deleted. We will update here when we know the exact reason - but it appears to be isolated.
Update - We have seen that if you have Twitter followers, people may not be able to be deleted from the list. Try removing your followers from the list, then deleting the list.