UITableView didSelectRowAtIndexPath called twice

Under certain circumstances, UITableView didSelectRowAtIndexPath is being called twice causing the error Pushing the same view controller instance more than once is not supported.

Here's are the sequence of events:

TableView::didSelectRowAtIndexPath.  
TableView::viewWillDisappear.  
PushedViewController::viewWillAppear.  
TableView::didSelectRowAtIndexPath.  
Error: Pushing the same view controller instance more than once is not supported'  

The only thing worth noting is that the UITableView is loading images asynchronously, but that never calls didSelectRowAtIndexPath. Also, the PushedViewController is reused to avoid having to reload it each time a cell is selected in the UITableView.

Anyone have any idea what may be causing this? Thanks.